nolle prosequi vs knock off

nolle prosequi is a noun but knock off is not a noun.

Word	Noun	Adjective	Verb	Adverb
nolle prosequi	Yes	No	Yes	No
knock off	No	No	Yes	No

As verbs, knock off is a hypernym of nolle prosequi; that is, knock off is a word with a broader meaning than nolle prosequi:

nolle prosequi: drop prosecution of by entering a nolle prosequi in the court records
knock off: stop pursuing or acting

Other hypernyms of nolle prosequi include drop.

nolle prosequi (noun)	knock off (noun)
an entry in the court record to the effect that the plaintiff or prosecutor will not proceed

nolle prosequi (verb)	knock off (verb)
drop prosecution of by entering a nolle prosequi in the court records	stop pursuing or acting
	get rid of (someone who may be a threat) by killing
	write quickly
	take by theft
	cut the price of