spectrogram vs photo

spectrogram and photo both are nouns.

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

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

spectrogram: a photographic record of a spectrum
photo: a representation of a person or scene in the form of a print or transparent slide or in digital format

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

spectrogram (noun)	photo (noun)
a photographic record of a spectrum	a representation of a person or scene in the form of a print or transparent slide or in digital format