leaf vs leafy

leaf is a noun but leafy is not a noun.

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

leaf (noun)	leafy (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

leaf (adjective)	leafy (adjective)
	having or covered with leaves

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