packaging vs promo

packaging and promo both are nouns.

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

As nouns, packaging and promo are synonyms defined as:

packaging and promo: a message issued in behalf of some product or cause or idea or person or institution

Other synonyms of packaging include promotion, promotional material, publicity.

packaging (noun)	promo (noun)
the business of packing	a message issued in behalf of some product or cause or idea or person or institution
material used to make packages
a message issued in behalf of some product or cause or idea or person or institution