foliaceous vs leaf

foliaceous is not a noun while leaf is a noun.

Word	Noun	Adjective	Verb	Adverb
foliaceous	No	Yes	No	No
leaf	Yes	No	Yes	No

foliaceous (noun)	leaf (noun)
	hinged or detachable flat section (as of a table or door)
	a sheet of any written or printed material (especially in a manuscript or book)
	the main organ of photosynthesis and transpiration in higher plants

foliaceous (adjective)	leaf (adjective)
of or pertaining to or resembling the leaf of a plant
bearing numerous leaves
(especially of metamorphic rock) having thin leaflike layers or strata

foliaceous (verb)	leaf (verb)
	produce leaves, of plants
	turn over pages
	look through a book or other written material