bulbourethral gland vs Cowper's gland

bulbourethral gland and Cowper's gland both are nouns.

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

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

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

bulbourethral gland (noun)	Cowper's 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