unionization vs formation

unionization and formation both are nouns.

Word	Noun	Adjective	Verb	Adverb
unionization	Yes	No	No	No
formation	Yes	No	No	No

As nouns, formation is a hypernym of unionization; that is, formation is a word with a broader meaning than unionization:

Other hypernyms of unionization include constitution, establishment, organisation, organization.

unionization (noun)	formation (noun)
act of forming labor unions	the act of fabricating something in a particular shape
	the act of forming or establishing something
	creation by mental activity
	a particular spatial arrangement
	an arrangement of people or things acting as a unit
	(geology) the geological features of the earth
	natural process that causes something to form