Listening to a podcast this morning, I noticed the phrase mature language used in a content warning. It’s one of many phrases in the form X language, some of them similarly euphemistic, for what we might more plainly call swearing.
In several of these phrases, the modifier identifies the type of content: abusive language contains abuse, obscene language obscenity, profane language profanity, vulgar language vulgarity. But these categories are tricky to define and tend to overlap in usage; the phrases are often used interchangeably.1