plant vs parasite

plant and parasite both are nouns.

plant (noun)	parasite (noun)
buildings for carrying on industrial labor	an animal or plant that lives in or on a host (another animal or plant); it obtains nourishment from the host without benefiting or killing the host
(botany) a living organism lacking the power of locomotion	a follower who hangs around a host (without benefit to the host) in hope of gain or advantage
an actor situated in the audience whose acting is rehearsed but seems spontaneous to the audience
something planted secretly for discovery by another

plant (verb)	parasite (verb)
put or set (seeds, seedlings, or plants) into the ground
fix or set securely or deeply
set up or lay the groundwork for
place into a river
place something or someone in a certain position in order to secretly observe or deceive
put firmly in the mind