woof vs yarn

woof and yarn both are nouns.

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

As nouns, yarn is a hypernym of woof; that is, yarn is a word with a broader meaning than woof:

woof: the yarn woven across the warp yarn in weaving
yarn: a fine cord of twisted fibers (of cotton or silk or wool or nylon etc.) used in sewing and weaving

Other hypernyms of woof include thread.

woof (noun)	yarn (noun)
the yarn woven across the warp yarn in weaving	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

woof (verb)	yarn (verb)
	tell or spin a yarn