Broca's convolution vs Broca's center

Broca's convolution and Broca's center both are nouns.

Word	Noun	Adjective	Verb	Adverb
Broca's convolution	Yes	No	No	No
Broca's center	Yes	No	No	No

As nouns, Broca's convolution and Broca's center are synonyms defined as:

Broca's convolution and Broca's center: the motor speech center in the left hemisphere of the brain in most people

Other synonyms of Broca's convolution include Broca's area, Broca's gyrus, convolution of Broca.

Broca's convolution (noun)	Broca's center (noun)
the motor speech center in the left hemisphere of the brain in most people	the motor speech center in the left hemisphere of the brain in most people