cataphyll vs leafage

cataphyll and leafage both are nouns.

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

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

cataphyll: a reduced or scarcely developed leaf at the start of a plant's life (i.e., cotyledons) or in the early stages of leaf development
leafage: the main organ of photosynthesis and transpiration in higher plants

Other hypernyms of cataphyll include foliage, leaf.

cataphyll (noun)	leafage (noun)
a reduced or scarcely developed leaf at the start of a plant's life (i.e., cotyledons) or in the early stages of leaf development	the main organ of photosynthesis and transpiration in higher plants