plant vs herbal therapy

plant and herbal therapy both are nouns.

plant (noun)	herbal therapy (noun)
buildings for carrying on industrial labor	the use of plants or plant extracts for medicinal purposes (especially plants that are not part of the normal diet)
(botany) a living organism lacking the power of locomotion
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)	herbal therapy (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