hype vs promo

hype and promo both are nouns.

Word	Noun	Adjective	Verb	Adverb
hype	Yes	No	Yes	No
promo	Yes	No	No	No

As nouns, promo is a hypernym of hype; that is, promo is a word with a broader meaning than hype:

hype: blatant or sensational promotion
promo: a message issued in behalf of some product or cause or idea or person or institution

Other hypernyms of hype include packaging, promotion, promotional material, publicity.

hype (noun)	promo (noun)
blatant or sensational promotion	a message issued in behalf of some product or cause or idea or person or institution

hype (verb)	promo (verb)
publicize in an exaggerated and often misleading manner