Pitressin vs vasoconstrictive

Pitressin and vasoconstrictive both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pitressin	Yes	No	No	No
vasoconstrictive	Yes	No	No	No

As nouns, vasoconstrictive is a hypernym of Pitressin; that is, vasoconstrictive is a word with a broader meaning than Pitressin:

Pitressin: hormone secreted by the posterior pituitary gland (trade name Pitressin) and also by nerve endings in the hypothalamus; affects blood pressure by stimulating capillary muscles and reduces urine flow by affecting reabsorption of water by kidney tubules
vasoconstrictive: any agent that causes a narrowing of an opening of a blood vessel: cold or stress or nicotine or epinephrine or norepinephrine or angiotensin or vasopressin or certain drugs; maintains or increases blood pressure

Other hypernyms of Pitressin include pressor, vasoconstrictor, endocrine, hormone, internal secretion.

Pitressin (noun)	vasoconstrictive (noun)
hormone secreted by the posterior pituitary gland (trade name Pitressin) and also by nerve endings in the hypothalamus; affects blood pressure by stimulating capillary muscles and reduces urine flow by affecting reabsorption of water by kidney tubules	any agent that causes a narrowing of an opening of a blood vessel: cold or stress or nicotine or epinephrine or norepinephrine or angiotensin or vasopressin or certain drugs; maintains or increases blood pressure