inventory vs itemization

inventory and itemization both are nouns.

Word	Noun	Adjective	Verb	Adverb
inventory	Yes	No	Yes	No
itemization	Yes	No	No	No

As nouns, itemization is a hypernym of inventory; that is, itemization is a word with a broader meaning than inventory:

Other hypernyms of inventory include itemisation, listing.

inventory (noun)	itemization (noun)
making an itemized list of merchandise or supplies on hand	the act of making a list of items
the merchandise that a shop has on hand
a collection of resources
a detailed list of all the items in stock
(accounting) the value of a firm's current assets including raw materials and work in progress and finished goods

inventory (verb)	itemization (verb)
make or include in an itemized record or report