X-ray film vs photographic film

X-ray film and photographic film both are nouns.

Word	Noun	Adjective	Verb	Adverb
X-ray film	Yes	No	No	No
photographic film	Yes	No	No	No

As nouns, photographic film is a hypernym of X-ray film; that is, photographic film is a word with a broader meaning than X-ray film:

X-ray film: photographic film used to make X-ray pictures
photographic film: photographic material consisting of a base of celluloid covered with a photographic emulsion; used to make negatives or transparencies

Other hypernyms of X-ray film include film.

X-ray film (noun)	photographic film (noun)
photographic film used to make X-ray pictures	photographic material consisting of a base of celluloid covered with a photographic emulsion; used to make negatives or transparencies