linguistics vs liberal arts

linguistics and liberal arts both are nouns.

Word	Noun	Adjective	Verb	Adverb
linguistics	Yes	No	No	No
liberal arts	Yes	No	No	No

As nouns, liberal arts is a hypernym of linguistics; that is, liberal arts is a word with a broader meaning than linguistics:

linguistics: the humanistic study of language and literature
liberal arts: studies intended to provide general knowledge and intellectual skills (rather than occupational or professional skills)

Other hypernyms of linguistics include arts, humanistic discipline, humanities.

linguistics (noun)	liberal arts (noun)
the scientific study of language	studies intended to provide general knowledge and intellectual skills (rather than occupational or professional skills)
the humanistic study of language and literature