Language comprehension is a separate cognitive system from thinking, as demonstrated by individuals who lose language capabilities due to brain damage while retaining other cognitive functions.

“Global aphasic Who Um can do any task just fine but not language they can't they can't talk to them I mean you they don't understand you they can't speak they can't write they can't read but they can do all they can play chess they can drive their cars they can do all kinds of other stuff”