unitize vs class

unitize is not a noun while class is a noun.

Word	Noun	Adjective	Verb	Adverb
unitize	No	No	Yes	No
class	Yes	No	Yes	No

As verbs, class is a hypernym of unitize; that is, class is a word with a broader meaning than unitize:

Other hypernyms of unitize include assort, classify, separate, sort, sort out.

unitize (noun)	class (noun)
	education imparted in a series of lessons or meetings
	elegance in dress or behavior
	a collection of things sharing a common attribute
	people having the same social, economic, or educational status
	(biology) a taxonomic group containing one or more orders
	a body of students who are taught together
	a body of students who graduate together
	a league ranked by quality

unitize (verb)	class (verb)
separate or classify into units	arrange or order by classes or categories
make into a unit
divide (bulk material) and process as units