foliation vs foliage

foliation and foliage both are nouns.

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

As nouns, foliation and foliage are synonyms defined as:

foliation (noun)	foliage (noun)
the production of foil by cutting or beating metal into thin leaves	(architecture) leaf-like architectural ornament
the work of coating glass with metal foil	the main organ of photosynthesis and transpiration in higher plants
(architecture) leaf-like architectural ornament
(geology) the arrangement of leaflike layers in a rock
(botany) the process of forming leaves