rip off vs fleece

rip off is not a noun while fleece is a noun.

Word	Noun	Adjective	Verb	Adverb
rip off	No	No	Yes	No
fleece	Yes	No	Yes	No

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

rip off (noun)	fleece (noun)
	outer coat of especially sheep and yaks
	a soft bulky fabric with deep pile; used chiefly for clothing
	the wool of a sheep or similar animal
	tanned skin of a sheep with the fleece left on; used for clothing

rip off (verb)	fleece (verb)
remove by pulling or ripping violently and forcefully	shear the wool from
take without the owner's consent	rip off; ask an unreasonable price
deprive somebody of something by deceit