advisory vs informative

advisory is a noun but informative is not a noun.

Word	Noun	Adjective	Verb	Adverb
advisory	Yes	Yes	No	No
informative	No	Yes	No	No

advisory (noun)	informative (noun)
an announcement that usually advises or warns the public of some threat

advisory (adjective)	informative (adjective)
giving advice	providing or conveying information
	tending to increase knowledge or dissipate ignorance
	serving to instruct or enlighten or inform