Broca's center vs nerve centre

Broca's center and nerve centre both are nouns.

Word	Noun	Adjective	Verb	Adverb
Broca's center	Yes	No	No	No
nerve centre	Yes	No	No	No

As nouns, nerve centre is a hypernym of Broca's center; that is, nerve centre is a word with a broader meaning than Broca's center:

Broca's center: the motor speech center in the left hemisphere of the brain in most people
nerve centre: a cluster of nerve cells governing a specific bodily process

Other hypernyms of Broca's center include center, centre, nerve center.

Broca's center (noun)	nerve centre (noun)
the motor speech center in the left hemisphere of the brain in most people	a cluster of nerve cells governing a specific bodily process
	a center that provides information and control