black and white vs photo

black and white and photo both are nouns.

Word	Noun	Adjective	Verb	Adverb
black and white	Yes	Yes	No	No
photo	Yes	No	No	No

As nouns, photo is a hypernym of black and white; that is, photo is a word with a broader meaning than black and white:

black and white: a black-and-white photograph or slide
photo: a representation of a person or scene in the form of a print or transparent slide or in digital format

Other hypernyms of black and white include exposure, photograph, pic, picture.

black and white (noun)	photo (noun)
a black-and-white photograph or slide	a representation of a person or scene in the form of a print or transparent slide or in digital format
communication by means of written symbols (either printed or handwritten)

black and white (adjective)	photo (adjective)
not having or not capable of producing colors