inventory (n.) Look up inventory at Dictionary.com
early 15c., from Old French inventoire "detailed list of goods, a catalogue" (15c.), from Medieval Latin inventorium, alteration of Late Latin inventarium "list of what is found," from Latin inventus, past participle of invenire "to find, discover, ascertain" (see invention). Altered in Medieval Latin by influence of words in -orium; it properly belongs with words in -ary. Related: Inventorial; inventorially.
inventory (v.) Look up inventory at Dictionary.com
"make a list or catalogue of," c. 1600, from inventory (n.). Related: Inventoried; inventorying.