notification vs warning

notification and warning both are nouns.

Word	Noun	Adjective	Verb	Adverb
notification	Yes	No	No	No
warning	Yes	Yes	No	No

As nouns, warning is a hyponym of notification; that is, warning is a word with a more specific, narrower meaning than notification:

Other hyponyms of notification include notice.

notification (noun)	warning (noun)
an accusation of crime made by a grand jury on its own initiative	a message informing of danger
informing by words	cautionary advice about something imminent (especially imminent danger or other unpleasantness)
a request for payment	notification of something, usually in advance

notification (adjective)	warning (adjective)
	serving to warn