prolactin vs gonadotropin

prolactin and gonadotropin both are nouns.

Word	Noun	Adjective	Verb	Adverb
prolactin	Yes	No	No	No
gonadotropin	Yes	No	No	No

As nouns, gonadotropin is a hypernym of prolactin; that is, gonadotropin is a word with a broader meaning than prolactin:

prolactin: gonadotropic hormone secreted by the anterior pituitary; in females it stimulates growth of the mammary glands and lactation after parturition
gonadotropin: hormone secreted by the anterior pituitary gland and placenta; stimulates the gonads and controls reproductive activity

Other hypernyms of prolactin include gonadotrophic hormone, gonadotrophin, gonadotropic hormone, lactogen.

prolactin (noun)	gonadotropin (noun)
gonadotropic hormone secreted by the anterior pituitary; in females it stimulates growth of the mammary glands and lactation after parturition	hormone secreted by the anterior pituitary gland and placenta; stimulates the gonads and controls reproductive activity