erose leaf vs leafage

erose leaf and leafage both are nouns.

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

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

erose leaf: a leaf having a jagged margin as though gnawed
leafage: the main organ of photosynthesis and transpiration in higher plants

Other hypernyms of erose leaf include foliage, leaf.

erose leaf (noun)	leafage (noun)
a leaf having a jagged margin as though gnawed	the main organ of photosynthesis and transpiration in higher plants