fungus kingdom vs saprophytic

fungus kingdom is a noun but saprophytic is not a noun.

Word	Noun	Adjective	Verb	Adverb
fungus kingdom	Yes	No	No	No
saprophytic	No	Yes	No	No

fungus kingdom (noun)	saprophytic (noun)
the taxonomic kingdom including yeast, molds, smuts, mushrooms, and toadstools; distinct from the green plants

fungus kingdom (adjective)	saprophytic (adjective)
	obtaining food osmotically from dissolved organic material
	(of some plants or fungi) feeding on dead or decaying organic matter