Welcome to the forum, bhuvanesh. Some verbs are used with objects, some not, and some have uses with and without objects.
I'm going to highlight the object in the following:
Kick is a verb that requires an object. The player kicked the ball.
Speak does not take an object. He spoke quietly.
Work can be either way. He worked hard. He worked the clay in his hands until it was soft.
Abase takes an object. He abased himself.
An object is a noun, or a phrase that behaves like a noun, and is "acted on" by the verb. The ball was acted on through the kick.