The word "am" is a form of the verb "to be" in the first-person singular present tense. It is used to indicate existence, identity, or a state of being in the present. Here are a few definitions and examples of how "am" is used:
Existence: "Am" can be used to indicate that someone or something exists.
Identity: "Am" can be used to describe oneself or someone else.
State of Being: "Am" can express a specific state or condition.
It's important to note that "am" is specifically used with the pronoun "I" in the present tense. Other forms of the verb "to be" include "is" (third-person singular), "are" (second-person singular and plural, and first-, second-, and third-person plural), and "was" and "were" (past tense forms).