1Change, variation, alteration, or transformation — the process or result of becoming different.
気温の変化が激しい季節だ。
It's a season when temperature changes are drastic.
その化学反応は色の変化を伴った。
The chemical reaction accompanied a change in color.
子どもの成長は日々の小さな変化の積み重ねだ。
A child's growth is an accumulation of small daily changes.
2Variety or diversity; having variation (often expressed as 'having change/variety').
この道は景色に変化があって歩いていて飽きない。
This road has changing scenery, so walking it never gets boring.
料理に変化をつけるために、スパイスを足した。
To add variety to the dish, I added some spices.
3Inflection or conjugation in grammar; the way a word's form changes (e.g., declension, conjugation).
日本語の動詞はグループによって変化の仕方が違う。
Japanese verbs change form differently depending on their group.
この単語の変化形をノートに書いておいてください。
Please write the inflected forms of this word in your notebook.
4In sumo, 'henka' — an evasive sidestep or movement at the start of a match to deceive the opponent.
力士は始めに変化を見せて相手を惑わせた。
The wrestler showed a henka at the start to confuse his opponent.