prevue vs ad

prevue and ad both are nouns.

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

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

prevue: an advertisement consisting of short scenes from a motion picture that will appear in the near future
ad: a public promotion of some product or service

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

prevue (noun)	ad (noun)
an advertisement consisting of short scenes from a motion picture that will appear in the near future	a public promotion of some product or service