cite vs photo credit

cite and photo credit both are nouns.

Word	Noun	Adjective	Verb	Adverb
cite	Yes	No	Yes	No
photo credit	Yes	No	No	No

As nouns, photo credit is a hyponym of cite; that is, photo credit is a word with a more specific, narrower meaning than cite:

cite: a short note recognizing a source of information or of a quoted passage
photo credit: a note acknowledging the source of a published photograph

Other hyponyms of cite include cross-index, cross-reference.

cite (noun)	photo credit (noun)
a short note recognizing a source of information or of a quoted passage	a note acknowledging the source of a published photograph

cite (verb)	photo credit (verb)
make reference to
commend
repeat a passage from
refer to for illustration or proof
advance evidence for
call in an official matter, such as to attend court
refer to