megasporophyll vs sporophyll

megasporophyll and sporophyll both are nouns.

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

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

megasporophyll: in non-flowering plants, a sporophyll that bears only megasporangia
sporophyll: leaf in ferns and mosses that bears the sporangia

Other hypernyms of megasporophyll include sporophyl.

megasporophyll (noun)	sporophyll (noun)
in non-flowering plants, a sporophyll that bears only megasporangia	leaf in ferns and mosses that bears the sporangia