verb vs content word

verb and content word both are nouns.

Word	Noun	Adjective	Verb	Adverb
verb	Yes	No	No	No
content word	Yes	No	No	No

As nouns, content word is a hypernym of verb; that is, content word is a word with a broader meaning than verb:

verb: a content word that denotes an action, occurrence, or state of existence
content word: a word to which an independent meaning can be assigned

Other hypernyms of verb include open-class word.

verb (noun)	content word (noun)
a content word that denotes an action, occurrence, or state of existence	a word to which an independent meaning can be assigned
the word class that serves as the predicate of a sentence