used for emphasizing that, although something is true, something else is also true or is more importantOur apartment is not only centrally located, it’s near a park too.
We need to talk about these problems, not simply assume they will resolve themselves.
not only...but (also): There are problems not only with the students, but also with the teachers themselves.
not only do/will/can etc: Not only can he make people laugh, he can make them cry as well.