verdure vs foliage

verdure and foliage both are nouns.

Word	Noun	Adjective	Verb	Adverb
verdure	Yes	No	No	No
foliage	Yes	No	No	No

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

verdure: green foliage
foliage: the main organ of photosynthesis and transpiration in higher plants

Other hypernyms of verdure include leaf, leafage.

verdure (noun)	foliage (noun)
the lush appearance of flourishing vegetation	(architecture) leaf-like architectural ornament
green foliage	the main organ of photosynthesis and transpiration in higher plants