How do you say hat in Chinese?
— 帽子 (màozi)

Generic synonyms for hat in Chinese
office办公室 (bàngōngshì), 事務所, 事务所 (shìwùsuǒ)
part部分 (bùfen)
Specialized synonyms for hat in Chinese
beaver海狸 (hǎilí), 河狸 (hélí)