knockoff vs clone

knockoff and clone both are nouns.

Word	Noun	Adjective	Verb	Adverb
knockoff	Yes	No	No	No
clone	Yes	No	Yes	No

As nouns, knockoff and clone are synonyms defined as:

knockoff (noun)	clone (noun)
an unauthorized copy or imitation	an unauthorized copy or imitation
	a group of genetically identical cells or organisms derived from a single cell or individual by some kind of asexual reproduction
	a person who is almost identical to another

knockoff (verb)	clone (verb)
	make multiple identical copies of