yarn vs narrate

yarn is a noun but narrate is not a noun.

Word	Noun	Adjective	Verb	Adverb
yarn	Yes	No	Yes	No
narrate	No	No	Yes	No

As verbs, narrate is a hypernym of yarn; that is, narrate is a word with a broader meaning than yarn:

Other hypernyms of yarn include recite, recount, tell.

yarn (noun)	narrate (noun)
a fine cord of twisted fibers (of cotton or silk or wool or nylon etc.) used in sewing and weaving
the act of giving an account describing incidents or a course of events

yarn (verb)	narrate (verb)
tell or spin a yarn	narrate or give a detailed account of
	provide commentary for a film, for example