melanocyte-stimulating hormone vs MSH

melanocyte-stimulating hormone and MSH both are nouns.

Word	Noun	Adjective	Verb	Adverb
melanocyte-stimulating hormone	Yes	No	No	No
MSH	Yes	No	No	No

As nouns, melanocyte-stimulating hormone and MSH are synonyms defined as:

melanocyte-stimulating hormone and MSH: a hormone secreted by the anterior pituitary gland that controls the degree of pigmentation in melanocytes

melanocyte-stimulating hormone (noun)	MSH (noun)
a hormone secreted by the anterior pituitary gland that controls the degree of pigmentation in melanocytes	a hormone secreted by the anterior pituitary gland that controls the degree of pigmentation in melanocytes