noun, noun or participle which takes 'suru'
rename
Common IT and general-use loanword for changing the name of a file, variable, account, etc. Used with する as a suru-verb.
ファイルをリネームして保存した。
I renamed the file and saved it.
この変数は後でリネームする予定です。
I plan to rename this variable later.
改名 is a native Japanese word for renaming, often used for people, organizations, or formal name changes, while リネーム is a casual loanword common in computing and everyday contexts.
Loanword from English 'rename'.