lobed leaf vs leafage

lobed leaf and leafage both are nouns.

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

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

lobed leaf: a leaf having deeply indented margins
leafage: the main organ of photosynthesis and transpiration in higher plants

Other hypernyms of lobed leaf include foliage, leaf.

lobed leaf (noun)	leafage (noun)
a leaf having deeply indented margins	the main organ of photosynthesis and transpiration in higher plants