floral leaf vs leafage

floral leaf and leafage both are nouns.

Word	Noun	Adjective	Verb	Adverb
floral leaf	Yes	No	No	No
leafage	Yes	No	No	No

As nouns, leafage is a hypernym of floral leaf; that is, leafage is a word with a broader meaning than floral leaf:

floral leaf: a modified leaf that is part of a flower
leafage: the main organ of photosynthesis and transpiration in higher plants

Other hypernyms of floral leaf include foliage, leaf.

floral leaf (noun)	leafage (noun)
a modified leaf that is part of a flower	the main organ of photosynthesis and transpiration in higher plants