Search for "Broca and Wernicke" to learn more about the distinct areas of the brain responsible for producing vs processing language.

I probably don't have the best reference at hand, but reducing language to a handful of brain areas like Wernicke and Broca seems to be in flux recently (while more research seems needed)[0].

[0] https://psycnet.apa.org/fulltext/2024-11707-001.html