jack off vs scarf

jack off is not a noun while scarf is a noun.

Word	Noun	Adjective	Verb	Adverb
jack off	No	No	Yes	No
scarf	Yes	No	Yes	No

As verbs, scarf is a hyponym of jack off; that is, scarf is a word with a more specific, narrower meaning than jack off:

Other hyponyms of jack off include chaturbate.

jack off (noun)	scarf (noun)
	a garment worn around the head or neck or shoulders for warmth or decoration
	a joint made by notching the ends of two pieces of timber or metal so that they will lock together end-to-end

jack off (verb)	scarf (verb)
get sexual gratification through self-stimulation	wrap in or adorn with a scarf
	masturbate while strangling oneself
	unite by a scarf joint