crenate leaf vs leafage

crenate leaf and leafage both are nouns.

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

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

crenate leaf: a leaf having a scalloped margin
leafage: the main organ of photosynthesis and transpiration in higher plants

Other hypernyms of crenate leaf include foliage, leaf.

crenate leaf (noun)	leafage (noun)
a leaf having a scalloped margin	the main organ of photosynthesis and transpiration in higher plants