How to say "evolution" in Japanese

• 進化しんかJLPT N1approx.Common
  noun, suru verb, intransitive verbUse this for evolution as gradual change into a more advanced or complex form — biological evolution above all, and by extension the evolution of technology or products as they improve.
  絶滅ぜつめつは進化しんかの一部いちぶである。↗

  Extinction is part of evolution.
• 展開てんかいJLPT N2approx.Common
  noun, suru verb, transitive verb, intransitive verbIts 'evolution' means unfolding or progression — how events, a story, or a situation develop over time. For biological evolution it is not the word you want; it really means development.
  その事件じけんの展開てんかいについて引き続ひきつづきお知しらせ下ください。↗

  Please keep me informed of the development of the case.

Use 進化 for evolution as change toward a more advanced form, above all biological; 展開 matches 'evolution' only as the unfolding or progression of events, a story, or a situation.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 進化しんかevolution
• 展開てんかいdevelopment
• エボリューションevolution
• 化育かいくcreation of the world
• 開法かいほうextraction of roots