both\ ---\ and

both\ ---\ and
coord. conj.
Used to emphasize that two or more things are talked about.

Both Frank and Mary were at the party.

Millie is both a good swimmer and a good cook.

In the program tonight Mary will both sing and dance.

The frog can move quickly both on land and in the water.

Compare: as well as.
Contrast: either --- or

Словарь американских идиом. — СПб., Изд-во "Лань". . 1997.