What You'll See Here

both	I can call both Lucie and Edmund
either	I can call either Lucie or Edmund
neither	I can call neither Lucie nor Edmund
When to use these words?	Used when we want to refer to two alternatives, people, or things.

Definition

We can use both, either, and neither when we want to refer to two alternatives, people, or things.

Example

I like both cookies and cake.
He can throw either a baseball or a football.
She can take neither her brother nor her sister to the movies.