| No. | Item | Definition |
|---|---|---|
| 1. | advent | the arrival or appearance |
| 2. | affair | a matter or occurrence |
| 3. | air | a distinctive quality or feeling |
| 4. | appearance | the way something seems |
| 5. | arrangement | the way parts are organized |
| 6. | aspect | a particular part or feature |
| 7. | atmosphere | the general feeling or condition |
| 8. | attribute | a quality belonging to something |
| 9. | breakthrough | an important advance or discovery |
| 10. | case | a particular example or situation |
| 11. | chain | a linked series of events |
| 12. | change | an alteration or difference |
| 13. | characteristic | a typical feature or quality |
| 14. | circumstance | a condition or fact involved |
| 15. | condition | a state of affairs |
| 16. | current | a prevailing tendency or flow |
| 17. | cycle | a recurring series |
| 18. | development | a notable change or event |
| 19. | discovery | something found or learned |
| 20. | drift | a gradual movement or trend |
| 21. | dynamic | a force or pattern of change |
| 22. | echo | a repeated or reflected effect |
| 23. | emergence | the process of appearing |
| 24. | episode | a distinct event or occurrence |
| 25. | event | something that happens |
| 26. | evolution | gradual development over time |
| 27. | example | a representative case |
| 28. | experience | something encountered or undergone |
| 29. | expression | an outward form or sign |
| 30. | fabric | the underlying structure |
| 31. | feature | a noticeable characteristic |
| 32. | finding | something discovered or determined |
| 33. | flare-up | a sudden outbreak |
| 34. | flash | a sudden brief appearance |
| 35. | form | a particular shape or type |
| 36. | formation | the act of taking shape |
| 37. | framework | the basic structure or system |
| 38. | glimpse | a brief or partial view |
| 39. | growth | increase or development |
| 40. | happening | an event or occurrence |
| 41. | incident | an event, often notable |
| 42. | indication | a sign or suggestion |
| 43. | indicator | something that points something out |
| 44. | instance | a particular case or example |
| 45. | interaction | mutual action or influence |
| 46. | interplay | the way things affect each other |
| 47. | landmark | a notable event or development |
| 48. | link | a connecting element |
| 49. | makeup | the composition or nature |
| 50. | manifestation | a visible sign or form |
| 51. | mark | a distinguishing sign or feature |
| 52. | mechanism | the process or system involved |
| 53. | milestone | a significant stage or event |
| 54. | model | a representative form or example |
| 55. | movement | a developing change or tendency |
| 56. | nature | the essential character |
| 57. | observation | something noticed or recorded |
| 58. | occurrence | something that happens or exists |
| 59. | onset | the beginning of something |
| 60. | operation | the way something works |
| 61. | order | the way things are arranged |
| 62. | organization | the arranged structure of something |
| 63. | orientation | a general direction or tendency |
| 64. | outbreak | a sudden appearance or spread |
| 65. | pattern | a repeated or regular form |
| 66. | process | a series of changes |
| 67. | progression | a gradual advance or development |
| 68. | property | a quality or characteristic |
| 69. | prototype | an original model or example |
| 70. | quality | a distinctive attribute |
| 71. | rarity | something uncommon |
| 72. | reality | something that actually exists |
| 73. | relation | a connection between things |
| 74. | ripple | a spreading small effect |
| 75. | sequence | a connected series of events |
| 76. | shadow | a faint reflected presence |
| 77. | shift | a noticeable change |
| 78. | sign | an indication or evidence |
| 79. | situation | a set of conditions |
| 80. | spark | a small sudden sign |
| 81. | specimen | an individual example |
| 82. | state | a particular condition or status |
| 83. | stir | a slight movement or activity |
| 84. | symptom | a sign of a condition |
| 85. | tendency | a usual direction or inclination |
| 86. | thing | an unspecified object or matter |
| 87. | trace | a slight sign or mark |
| 88. | trait | a distinguishing quality |
| 89. | trend | a general direction of change |
| 90. | turn | a change in direction |
| 91. | turning point | a decisive moment of change |
| 92. | twist | an unexpected change |
| 93. | upheaval | major sudden change |
| 94. | upswing | an upward trend or rise |
| 95. | variation | a different form or instance |
| 96. | version | a particular form |
| 97. | wave | a surge or spread |
| 98. | witness | something serving as evidence |
| 99. | wonder | something remarkable or surprising |
| 100. | workings | the way something operates |