hierarchization vs assortment

hierarchization and assortment both are nouns.

Word	Noun	Adjective	Verb	Adverb
hierarchization	Yes	No	No	No
assortment	Yes	No	No	No

As nouns, assortment is a hypernym of hierarchization; that is, assortment is a word with a broader meaning than hierarchization:

hierarchization: The act or result of hierarchizing; the establishment of a hierarchy.
assortment: the act of distributing things into classes or categories of the same type

hierarchization (noun)	assortment (noun)
The act or result of hierarchizing; the establishment of a hierarchy.	the act of distributing things into classes or categories of the same type
	a collection containing a variety of sorts of things