class list vs listing

class list and listing both are nouns.

Word	Noun	Adjective	Verb	Adverb
class list	Yes	No	No	No
listing	Yes	No	No	No

As nouns, listing is a hypernym of class list; that is, listing is a word with a broader meaning than class list:

class list: a list issued by examiners that categorizes students according to the class of honours they achieved in their degree examinations
listing: a database containing an ordered array of items (names or topics)

Other hypernyms of class list include list.

class list (noun)	listing (noun)
a list issued by examiners that categorizes students according to the class of honours they achieved in their degree examinations	the act of making a list of items
	a database containing an ordered array of items (names or topics)