microdot vs photo

microdot and photo both are nouns.

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

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

microdot: photograph reduced to the size of a dot (usually for purposes of security)
photo: a representation of a person or scene in the form of a print or transparent slide or in digital format

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

microdot (noun)	photo (noun)
photograph reduced to the size of a dot (usually for purposes of security)	a representation of a person or scene in the form of a print or transparent slide or in digital format