hysterosalpingogram vs X-ray

hysterosalpingogram and X-ray both are nouns.

Word	Noun	Adjective	Verb	Adverb
hysterosalpingogram	Yes	No	No	No
X-ray	Yes	No	No	No

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

hysterosalpingogram: X ray of the uterus and Fallopian tubes; usually done in diagnosing infertility (to see if there any blockages)
X-ray: a radiogram made by exposing photographic film to X rays; used in medical diagnosis

Other hypernyms of hysterosalpingogram include roentgenogram, X-ray photograph, X-ray picture, X ray.

hysterosalpingogram (noun)	X-ray (noun)
X ray of the uterus and Fallopian tubes; usually done in diagnosing infertility (to see if there any blockages)	a radiogram made by exposing photographic film to X rays; used in medical diagnosis
	electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target