listing vs item

listing and item both are nouns.

Word	Noun	Adjective	Verb	Adverb
listing	Yes	No	No	No
item	Yes	No	No	Yes

listing (noun)	item (noun)
the act of making a list of items	a whole individual unit; especially when included in a list or collection
a database containing an ordered array of items (names or topics)	an isolated fact that is considered separately from the whole
	a distinct part that can be specified separately in a group of things that could be enumerated on a list
	an individual instance of a type of symbol
	a small part that can be considered separately from the whole

listing (adverb)	item (adverb)
	(used when listing or enumerating items) also