plant life vs botanical medicine

plant life and botanical medicine both are nouns.

Word	Noun	Adjective	Verb	Adverb
plant life	Yes	No	No	No
botanical medicine	Yes	No	No	No

plant life (noun)	botanical medicine (noun)
(botany) a living organism lacking the power of locomotion	the use of plants or plant extracts for medicinal purposes (especially plants that are not part of the normal diet)