foliation vs leafing

foliation and leafing both are nouns.

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

As nouns, foliation and leafing are synonyms defined as:

foliation (noun)	leafing (noun)
the production of foil by cutting or beating metal into thin leaves	(botany) the process of forming 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