Broca's area vs Broca's convolution

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

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

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

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

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

Broca's area (noun)	Broca's convolution (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