What is verb and it's conjugation

 VERB:

a word used to describe an action, state, or occurrence, and forming the main part of the predicate of a sentence, such as hear, become, happen.

INFINITIVE FORM : 

The infinitive form of a verb is the verb in its basic form. It is the version of the verb that appears in the dictionary. The infinitive form of a verb is usually preceded by "to" (e.g., "to run," "to dance," "to think").

WHAT IS CONJUGATION:

Conjugation refers to the act of changing the form of a verb and/or adding a helping verb to indicate person, number, and time (tense).

Why verb conjugation?

A conjugated verb provides more information about the rest of the sentence, without having to rely on any other word. For example, in Latin, one can know from a conjugated verb alone: who or what the subject is and whether it's singular or plural (I, you singular, he/she/it, we, you plural, or they)