collective vs knockdown

collective and knockdown both are nouns.

Word	Noun	Adjective	Verb	Adverb
collective	Yes	Yes	No	No
knockdown	Yes	Yes	No	No

collective (noun)	knockdown (noun)
members of a cooperative enterprise	a blow that knocks the opponent off his feet

collective (adjective)	knockdown (adjective)
forming a whole or aggregate	(furniture) easily assembled and dismantled
done by or characteristic of individuals acting together
set up on the principle of collectivism or ownership and production by the workers involved usually under the supervision of a government