adrenocorticotropic hormone vs adrenocorticotropin

adrenocorticotropic hormone and adrenocorticotropin both are nouns.

Word	Noun	Adjective	Verb	Adverb
adrenocorticotropic hormone	Yes	No	No	No
adrenocorticotropin	Yes	No	No	No

As nouns, adrenocorticotropic hormone and adrenocorticotropin are synonyms defined as:

adrenocorticotropic hormone and adrenocorticotropin: a hormone produced by the anterior pituitary gland that stimulates the adrenal cortex

Other synonyms of adrenocorticotropic hormone include ACTH, adrenocorticotrophic hormone, adrenocorticotrophin, corticotrophin, corticotropin.

adrenocorticotropic hormone (noun)	adrenocorticotropin (noun)
a hormone produced by the anterior pituitary gland that stimulates the adrenal cortex	a hormone produced by the anterior pituitary gland that stimulates the adrenal cortex