advertising campaign vs effort

advertising campaign and effort both are nouns.

Word	Noun	Adjective	Verb	Adverb
advertising campaign	Yes	No	No	No
effort	Yes	No	No	No

As nouns, effort is a hypernym of advertising campaign; that is, effort is a word with a broader meaning than advertising campaign:

advertising campaign: an organized program of advertisements
effort: a series of actions advancing a principle or tending toward a particular end

Other hypernyms of advertising campaign include campaign, cause, crusade, drive, movement.

advertising campaign (noun)	effort (noun)
an organized program of advertisements	earnest and conscientious activity intended to do or accomplish something
	use of physical or mental energy; hard work
	a notable achievement
	a series of actions advancing a principle or tending toward a particular end