adrenal vs adrenal gland

adrenal and adrenal gland both are nouns.

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

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

adrenal and adrenal gland: either of a pair of complex endocrine glands situated near the kidney

Other synonyms of adrenal include suprarenal gland.

adrenal (noun)	adrenal gland (noun)
either of a pair of complex endocrine glands situated near the kidney	either of a pair of complex endocrine glands situated near the kidney

adrenal (adjective)	adrenal gland (adjective)
of or pertaining to the adrenal glands or their secretions
near the kidneys