ichidan verb, transitive verb
Broad transitive use: make something different in state, form, appearance, or nature. Covers physical and abstract objects.
髪型を変えたい。
I want to change my hairstyle.
予定を変える必要がある
We need to change the plan.
ichidan verb, transitive verb
Used for deliberate improvement or correction of systems, rules, documents, or habits. Often implies making something better or more suitable.
法律を変えるには時間がかかる。
It takes time to amend a law.
彼は生活習慣を変えて健康になった。
He reformed his lifestyle and became healthy.