The word bite is a noun and not a verb.
To bite is a noun because to bite is the action of biting into something to eat it or cause injury.
Biting is a verb which means to use the teeth to cut into or through something.
A noun is a word that functions as the name of a specific object or set of objects, such as living creatures, places, actions, qualities, states of existence, or ideas.
However, noun is not a semantic category, so that it cannot be characterized in terms of its meaning.
A Verb is a word that in syntax conveys an action, an occurrence, or a state of being.
In the usual description of English, the basic form, with or without the particle to, is the infinitive. In many languages, verbs are inflected to encode tense, aspect, mood, and voice.
Bite the word bite is a noun and biting is a verb.