• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
Home of English Grammar
  • Home
  • Course
  • Exercises
  • Grammar Rules
  • Matches
  • Posts
  • Tools
    • Grammar Checker
    • Very Replacer
    • Word Counter
  • Vocabulary Lists
  • Archives
    • Social Media Posts
    • Writing Guides
  • Sign in
  • Join free

100 Words You Need to Know to Understand AI

January 19, 2026

No. Term Definition
1. AI alignment Making AI goals match human values.
2. AI ethics Moral principles guiding AI design and use.
3. Algorithm Step-by-step procedure for solving a problem.
4. API Interface letting software systems communicate.
5. Artificial general intelligence Human-level AI across many tasks.
6. Artificial intelligence Machines performing tasks requiring human intelligence.
7. Attention mechanism Model focuses on relevant parts of input.
8. Autoencoder Learns compressed data representations by reconstruction.
9. Automation Using machines to perform tasks automatically.
10. Backpropagation Method to compute gradients for neural networks.
11. Bagging Ensemble technique averaging models trained on bootstraps.
12. Baseline Simple reference model for comparison.
13. Bayesian inference Updating beliefs using probability and evidence.
14. Benchmark Standard test used to compare models.
15. Bias Systematic error causing unfair or skewed results.
16. Big data Very large datasets requiring scalable processing.
17. Binary classification Predicting one of two possible classes.
18. Boosting Ensemble method combining many weak learners.
19. Chatbot System that converses with users in text.
20. Classification Assigning inputs to predefined categories.
21. Clustering Grouping similar items without labeled examples.
22. Computer vision AI that interprets images and video.
23. Confusion matrix Table summarizing classification prediction outcomes.
24. Context window Amount of text a model can consider.
25. Convolutional neural network Neural network specialized for grid-like data.
26. Corpus Collection of text used for training.
27. Cross-validation Testing model across multiple train-test splits.
28. Data augmentation Creating varied training examples from existing data.
29. Data drift Input data changes over time, hurting performance.
30. Data labeling Adding human-provided tags to training data.
31. Dataset Organized collection of data for learning.
32. Decision tree Tree-structured model splitting features to predict.
33. Deep learning Machine learning using many-layer neural networks.
34. Diffusion model Generates data by denoising from noise.
35. Dimensionality reduction Reducing features while preserving important structure.
36. Distributed training Training across multiple machines or GPUs.
37. Dropout Regularization by randomly disabling neurons during training.
38. Embedding Numeric vector representing meaning or similarity.
39. Ensemble Combining multiple models to improve predictions.
40. Evaluation metric Number measuring model performance on a task.
41. Explainable AI Methods making model decisions understandable.
42. Feature Input variable used by a model.
43. Feature engineering Creating useful features from raw data.
44. Few-shot learning Learning from a small number of examples.
45. Fine-tuning Adapting a pretrained model to new data.
46. Foundation model Large pretrained model adaptable to many tasks.
47. Generative adversarial network Generator and discriminator trained to create realistic data.
48. Generative AI AI that creates text, images, or audio.
49. GPU Processor optimized for parallel numerical computation.
50. Gradient Direction and rate of change of loss.
51. Gradient descent Optimization method minimizing loss via gradients.
52. Hallucination Model outputs plausible but incorrect information.
53. Hyperparameter Setting chosen before training, like learning rate.
54. Image segmentation Labeling each pixel with a class.
55. Inference Using a trained model to make predictions.
56. Instruction tuning Training to follow human instructions better.
57. K-means Clustering algorithm minimizing within-cluster variance.
58. Knowledge graph Linked entities and relations stored as a graph.
59. Large language model Neural network trained to predict text tokens.
60. Latency Time delay to produce a model response.
61. Learning rate Step size used during optimization updates.
62. Linear regression Predicting a numeric value with a linear model.
63. Loss function Measure of model error to minimize.
64. Machine learning Algorithms learning patterns from data to predict.
65. Model Mathematical system mapping inputs to outputs.
66. Model collapse Generative model degrades from self-generated training data.
67. Multimodal Using multiple data types, like text and images.
68. Natural language processing AI techniques for understanding and generating language.
69. Neural network Layered function approximator inspired by brains.
70. Normalization Scaling features to comparable ranges.
71. Object detection Finding and labeling objects in images.
72. Overfitting Model fits training data but fails on new.
73. Parameter Learned weight value inside a model.
74. Perplexity Language-model uncertainty measure; lower is better.
75. Precision Fraction of predicted positives that are correct.
76. Pretraining Initial training on broad data before specialization.
77. Prompt Input text guiding a generative model.
78. Prompt engineering Crafting prompts to get better model outputs.
79. RAG Retrieval plus generation grounded in external sources.
80. Random forest Ensemble of decision trees using randomness.
81. Recall Fraction of actual positives correctly identified.
82. Recommender system Model suggesting items a user may like.
83. Reinforcement learning Learning actions via rewards from an environment.
84. RLHF Fine-tuning with human feedback to shape behavior.
85. Robustness Staying reliable under noise or adversarial inputs.
86. Safety Preventing harmful or unintended AI outcomes.
87. Sampling Choosing outputs from a probability distribution.
88. Self-supervised learning Learning from data using automatically generated labels.
89. Sentiment analysis Detecting opinions or emotions in text.
90. Supervised learning Learning from labeled input-output examples.
91. Synthetic data Artificially generated data resembling real data.
92. Temperature Sampling setting controlling randomness of outputs.
93. Test set Held-out data used only for final evaluation.
94. Token Basic text unit processed by language models.
95. Tokenization Splitting text into tokens for modeling.
96. Training Optimizing model parameters using data.
97. Training set Data used to fit model parameters.
98. Transfer learning Reusing learned knowledge for a new task.
99. Transformer Neural architecture using attention for sequence modeling.
100. Turing test Test of machine behavior indistinguishable from human.

Improve your English grammar, vocabulary and writing

We take you step by step from beginner to advanced, even if you struggled with English at school or have always had trouble remembering the rules.

  • 10 modules, 112 lessons and 730 questions
  • Just log in and learn anytime and anywhere
  • Your progress is saved in your account
  • Download the 2027 Grammar Guide (PDF)

Related lesson in the course Don’t have to, needn’t and didn’t need to Module 05: Modals & conditions · Lesson 3

Join free

Already have an account? Sign in

See what’s in the course

Primary Sidebar

2.4M760.9K165.9K

Free 2027 Grammar Guide

  • Download Grammar Guide (PDF)
  • Online grammar course, A1 to C2
  • Weekly exercises and vocabulary
  • Join over 3 million English learners

We respect your privacy. Unsubscribe anytime.

Already have an account? Sign in

Grammar Checker - Try Now

Matches Rankings

    No results yet. Be the first to finish today’s Daily.

      No results yet. Be the first to finish today’s Daily.

        No results yet. Be the first to finish today’s Daily.

          No results yet. Be the first to finish today’s Daily.

          Play Matches

          Latest Posts

          • 100 Best Synonyms for “Roles” November 5, 2026
          • Teach, learn, study, train, tutor, and educate: What’s the difference? November 5, 2026
          • 100 Best Synonyms for “Intensely” November 5, 2026
          • 100 Best Synonyms for “With Unique” November 5, 2026
          • “Cold turkey”: its meaning and possible link to plain speaking November 5, 2026
          • 100 Best Synonyms for “Intelligent” November 5, 2026
          • 100 Best Synonyms for “Whimsy” November 5, 2026
          • Voluble vs. verbose: fluent talk or unnecessary words? November 5, 2026
          • Complex Sentence Structures Exercise November 5, 2026
          • Innovation Debate Language Exercise November 5, 2026
          Home of English Grammar

          Free English grammar exercises, rules and vocabulary lists, with new exercises every week. Join the leading English grammar site with over 3 million followers.

          Join free

          Learn

          • Exercises
          • Matches
          • Grammar rules
          • Vocabulary lists
          • Writing guides
          • Online tools

          More

          • Top social media posts
          • Various posts
          • Contact

          Account

          • Join free
          • Grammar Course
          • Free grammar guide (PDF)

          Copyright © 2026 EnglishGrammar.org

          • Disclaimer
          • Privacy policy
          • Terms
          • Sitemap