What is a verb and noun at the same time?

This is a bit of a tricky question! There isn't a single word that is *always* both a verb and a noun at the same time. However, there are two main scenarios where a word can act as both:

1. Nouns that can be verbs:

* Many nouns can be used as verbs to describe an action related to that noun. For example:

* "Email" (noun) - "I sent an email" (verb)

* "Google" (noun) - "I googled the answer" (verb)

* "Facebook" (noun) - "Let's Facebook each other" (verb)

2. Verb forms that can be nouns:

* Some verb forms, especially the "-ing" form (present participle), can act as nouns.

* "Running" (verb) - "Running is good exercise" (noun)

* "Eating" (verb) - "Eating is my favorite activity" (noun)

So, while there isn't a single word that's always both a verb and a noun, many words can function as either depending on how they are used in a sentence.