runcinate leaf vs leafage

runcinate leaf and leafage both are nouns.

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

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

runcinate leaf: a leaf having incised margins with the lobes or teeth curved toward the base; as a dandelion leaf
leafage: the main organ of photosynthesis and transpiration in higher plants

Other hypernyms of runcinate leaf include foliage, leaf.

runcinate leaf (noun)	leafage (noun)
a leaf having incised margins with the lobes or teeth curved toward the base; as a dandelion leaf	the main organ of photosynthesis and transpiration in higher plants