dentate leaf vs foliage

dentate leaf and foliage both are nouns.

Word	Noun	Adjective	Verb	Adverb
dentate leaf	Yes	No	No	No
foliage	Yes	No	No	No

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

dentate leaf: a leaf having a toothed margin
foliage: the main organ of photosynthesis and transpiration in higher plants

Other hypernyms of dentate leaf include leaf, leafage.

dentate leaf (noun)	foliage (noun)
a leaf having a toothed margin	(architecture) leaf-like architectural ornament
	the main organ of photosynthesis and transpiration in higher plants