Rudeness; lack of refinement.

粗陋；鄙俗。

A phrase or expression not in use by cultivated speakers.

不文雅的话；俚语。

A vulgarism is a phrase or expression in common but not standard usage, not necessarily coarse but always incorrect; the use of "party" for "person" is a vulgarism.

Vulgarism 指通俗但不标准的语言，虽不一定粗鄙，但非正确用法，如以“party" 代替 "person"的用法。

A vulgarity is an instance of coarseness in manners or speech; the use of profanity or unrefined expression is a vulgarity.

Vulgarity 指言语或举止的粗俗；如使用亵渎的言语。