pituitary vs pituitary gland

pituitary and pituitary gland both are nouns.

Word	Noun	Adjective	Verb	Adverb
pituitary	Yes	Yes	No	No
pituitary gland	Yes	No	No	No

As nouns, pituitary and pituitary gland are synonyms defined as:

pituitary and pituitary gland: the master gland of the endocrine system; located at the base of the brain

Other synonyms of pituitary include hypophysis, pituitary body.

pituitary (noun)	pituitary gland (noun)
the master gland of the endocrine system; located at the base of the brain	the master gland of the endocrine system; located at the base of the brain

pituitary (adjective)	pituitary gland (adjective)
of or relating to the pituitary gland