micrograph vs photo

micrograph and photo both are nouns.

Word	Noun	Adjective	Verb	Adverb
micrograph	Yes	No	No	No
photo	Yes	No	No	No

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

micrograph: a graphic reproduction (as a photograph) of the image of an object formed by a microscope.
photo: a representation of a person or scene in the form of a print or transparent slide or in digital format

Other hypernyms of micrograph include exposure, photograph, pic, picture.

micrograph (noun)	photo (noun)
a graphic reproduction (as a photograph) of the image of an object formed by a microscope.	a representation of a person or scene in the form of a print or transparent slide or in digital format