| No. | Item | Definition |
|---|---|---|
| 1. | A/B test | comparison of two versions |
| 2. | accessibility | design usable by everyone |
| 3. | accordion | expandable content section |
| 4. | affordance | possible action suggested by design |
| 5. | alignment | lining elements up |
| 6. | authentication | verifying identity |
| 7. | autocomplete | suggests text while typing |
| 8. | avatar | user profile image |
| 9. | badge | small status marker |
| 10. | banner | prominent message area |
| 11. | breadcrumb | trail showing location |
| 12. | call to action | prompt encouraging next step |
| 13. | carousel | rotating content slider |
| 14. | checkbox | box for yes or no |
| 15. | component | reusable interface part |
| 16. | consistency | uniform behavior and appearance |
| 17. | contextual inquiry | research in real setting |
| 18. | contrast | difference aiding visibility |
| 19. | conversion | desired completed action |
| 20. | dashboard | screen summarizing key information |
| 21. | datepicker | control for choosing dates |
| 22. | design system | shared components and rules |
| 23. | diary study | logged experiences over time |
| 24. | discoverability | how easily features are found |
| 25. | drop-off | where users leave |
| 26. | dropdown | list that opens downward |
| 27. | elevation | visual depth level |
| 28. | empty state | screen with no content |
| 29. | engagement | level of user involvement |
| 30. | error state | condition showing a problem |
| 31. | eye tracking | measuring where users look |
| 32. | feedback | response to user action |
| 33. | fidelity | level of detail or realism |
| 34. | field | single input area |
| 35. | filter | tool narrowing results |
| 36. | form | fields for user input |
| 37. | friction | unnecessary effort in use |
| 38. | funnel | stages toward completion |
| 39. | gesture | touch movement command |
| 40. | grid | alignment framework |
| 41. | handoff | transfer to another team |
| 42. | heatmap | visual map of interactions |
| 43. | heuristic | practical usability rule |
| 44. | hierarchy | order of visual importance |
| 45. | iconography | system of icons |
| 46. | information architecture | organization of content and structure |
| 47. | insight | useful understanding from research |
| 48. | interaction design | design of behavior and responses |
| 49. | interview | direct conversation with users |
| 50. | iteration | repeated improvement cycle |
| 51. | journey map | visualized user experience over time |
| 52. | legibility | ease of reading letters |
| 53. | loading state | condition while waiting |
| 54. | margin | outer space around elements |
| 55. | metric | measurable performance value |
| 56. | microcopy | small helpful interface text |
| 57. | mobile-first | designed for phones first |
| 58. | mockup | static visual design model |
| 59. | modal | overlay requiring attention |
| 60. | motion | movement in interface |
| 61. | navigation | system for moving around |
| 62. | notification | message about an event |
| 63. | onboarding | first-use introduction process |
| 64. | opacity | degree of transparency |
| 65. | padding | inner space around content |
| 66. | pain point | user problem or frustration |
| 67. | pattern | reusable design solution |
| 68. | permission | granted access right |
| 69. | persona | fictional representative user |
| 70. | profile | user account information |
| 71. | progress bar | indicator of completion amount |
| 72. | prototype | interactive model for testing |
| 73. | radio button | single-choice selection control |
| 74. | readability | ease of reading text |
| 75. | requirement | needed feature or condition |
| 76. | retention | continued return usage |
| 77. | search | tool for finding content |
| 78. | settings | controls for preferences |
| 79. | sitemap | map of pages or sections |
| 80. | skeleton screen | placeholder during loading |
| 81. | slider | control for a range |
| 82. | sort | arrange items by rule |
| 83. | spacing | distance between elements |
| 84. | success state | condition showing completion |
| 85. | task flow | steps to complete a task |
| 86. | taxonomy | system for classifying content |
| 87. | toast | brief temporary message |
| 88. | toggle | switch between two states |
| 89. | tooltip | small explanatory popup |
| 90. | touch target | tap area size |
| 91. | tree test | testing findability in structure |
| 92. | typography | style of displayed text |
| 93. | usability | ease of use |
| 94. | user flow | path users take |
| 95. | user research | study of users and needs |
| 96. | user testing | observing people using a product |
| 97. | validation | checking input correctness |
| 98. | viewport | visible screen area |
| 99. | white space | empty space around elements |
| 100. | wireframe | basic layout sketch |