thyrotropin-releasing factor vs protirelin

thyrotropin-releasing factor and protirelin both are nouns.

Word	Noun	Adjective	Verb	Adverb
thyrotropin-releasing factor	Yes	No	No	No
protirelin	Yes	No	No	No

As nouns, thyrotropin-releasing factor and protirelin are synonyms defined as:

thyrotropin-releasing factor and protirelin: hormone released by the hypothalamus that controls the release of thyroid-stimulating hormone from the anterior pituitary

Other synonyms of thyrotropin-releasing factor include thyrotropin-releasing hormone, TRF, TRH.

thyrotropin-releasing factor (noun)	protirelin (noun)
hormone released by the hypothalamus that controls the release of thyroid-stimulating hormone from the anterior pituitary	hormone released by the hypothalamus that controls the release of thyroid-stimulating hormone from the anterior pituitary