护卫舰

corvette

to protect

to guard / to protect / bodyguard (for officials in ancient times)

to guard / to protect / to defend / abbr. for 衛生|卫生, hygiene / health / abbr. for 衛生間|卫生间, toilet / surname Wei / vassal state during the Zhou Dynasty (1066-221 BC), located in present day Henan and Hebei Provinces

a frigate (warship)

warship