sporophyll vs leafage

sporophyll and leafage both are nouns.

Word	Noun	Adjective	Verb	Adverb
sporophyll	Yes	No	No	No
leafage	Yes	No	No	No

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

sporophyll: leaf in ferns and mosses that bears the sporangia
leafage: the main organ of photosynthesis and transpiration in higher plants

Other hypernyms of sporophyll include foliage, leaf.

sporophyll (noun)	leafage (noun)
leaf in ferns and mosses that bears the sporangia	the main organ of photosynthesis and transpiration in higher plants