leafing vs foliation

leafing and foliation both are nouns.

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

As nouns, leafing and foliation are synonyms defined as:

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