Hypertensin vs angiotonin

Hypertensin and angiotonin both are nouns.

Word	Noun	Adjective	Verb	Adverb
Hypertensin	Yes	No	No	No
angiotonin	Yes	No	No	No

As nouns, Hypertensin and angiotonin are synonyms defined as:

Hypertensin and angiotonin: any of several vasoconstrictor substances (trade name Hypertensin) that cause narrowing of blood vessels

Other synonyms of Hypertensin include angiotensin.

Hypertensin (noun)	angiotonin (noun)
any of several vasoconstrictor substances (trade name Hypertensin) that cause narrowing of blood vessels	any of several vasoconstrictor substances (trade name Hypertensin) that cause narrowing of blood vessels