TRH vs hormone

TRH and hormone both are nouns.

Word	Noun	Adjective	Verb	Adverb
TRH	Yes	No	No	No
hormone	Yes	No	No	No

As nouns, hormone is a hypernym of TRH; that is, hormone is a word with a broader meaning than TRH:

TRH: hormone released by the hypothalamus that controls the release of thyroid-stimulating hormone from the anterior pituitary
hormone: the secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effect

Other hypernyms of TRH include endocrine, internal secretion.

TRH (noun)	hormone (noun)
hormone released by the hypothalamus that controls the release of thyroid-stimulating hormone from the anterior pituitary	the secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effect