nitrification vs plant life

nitrification and plant life both are nouns.

Word	Noun	Adjective	Verb	Adverb
nitrification	Yes	No	No	No
plant life	Yes	No	No	No

nitrification (noun)	plant life (noun)
the oxidation of ammonium compounds in dead organic material into nitrates and nitrites by soil bacteria (making nitrogen available to plants)	(botany) a living organism lacking the power of locomotion
the chemical process in which a nitro group is added to an organic compound (or substituted for another group in an organic compound)