advertorial vs ad

advertorial and ad both are nouns.

Word	Noun	Adjective	Verb	Adverb
advertorial	Yes	No	No	No
ad	Yes	No	No	No

As nouns, ad is a hypernym of advertorial; that is, ad is a word with a broader meaning than advertorial:

advertorial: an advertisement that is written and presented in the style of an editorial or journalistic report
ad: a public promotion of some product or service

Other hypernyms of advertorial include advert, advertisement, advertising, advertizement, advertizing.

advertorial (noun)	ad (noun)
an advertisement that is written and presented in the style of an editorial or journalistic report	a public promotion of some product or service