Cowper's gland vs bulbourethral gland

Cowper's gland and bulbourethral gland both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cowper's gland	Yes	No	No	No
bulbourethral gland	Yes	No	No	No

As nouns, Cowper's gland and bulbourethral gland are synonyms defined as:

Cowper's gland and bulbourethral gland: either of two glands that discharge a component of seminal fluid into the urethra; homologous to Bartholin's gland in the female

Cowper's gland (noun)	bulbourethral gland (noun)
either of two glands that discharge a component of seminal fluid into the urethra; homologous to Bartholin's gland in the female	either of two glands that discharge a component of seminal fluid into the urethra; homologous to Bartholin's gland in the female