Both: Predeterminer / Determiner / Pronoun
/bəʊθ/ US /boʊθ/
predeterminer, determiner, pronoun
(referring to) two people or things together:
Both my parents are teachers.
They have two grown children, both of whom live abroad.
She has written two novels, both of which have been made into television series.
Both Mike and Jim have red hair./Mike and Jim both have red hair.
I loved them both/I loved both of them.
The problem with both of these proposals is that they are hopelessly impractical.
Are both of us invited, or just you?
Would you like milk or sugar or both?
Both men and women have complained about the advertisement.
I felt both happy and sad at the same time.
I think it’s important to listen to both sides of the argument.
Improved child-care facilities would benefit both sexes, not just women.
I failed my driving test because I didn’t keep both hands on the steering wheel.