unit vs unitize

unit is a noun but unitize is not a noun.

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

unit (noun)	unitize (noun)
an assemblage of parts that is regarded as a single entity
a single undivided whole
an organization regarded as part of a larger social group
a single undivided natural thing occurring in the composition of something else
any division of quantity accepted as a standard of measurement or exchange
an individual or group or structure or other entity regarded as a structural or functional constituent of a whole

unit (verb)	unitize (verb)
	separate or classify into units
	make into a unit
	divide (bulk material) and process as units