writing style vs verse

writing style and verse both are nouns.

Word	Noun	Adjective	Verb	Adverb
writing style	Yes	No	No	No
verse	Yes	No	Yes	No

As nouns, verse is a hyponym of writing style; that is, verse is a word with a more specific, narrower meaning than writing style:

Other hyponyms of writing style include drama, prose, form, poesy, poetry, satire, steampunk.

writing style (noun)	verse (noun)
a style of expressing yourself in writing	a piece of poetry
	a line of metrical text
	literature in metrical form

writing style (verb)	verse (verb)
	familiarize through thorough study or experience
	compose verses or put into verse