This is a common experience that firstly we hear a sentence and then we understand its meaning. This sentence is composed of words; and these words have got potentialty and through this they are capable of expressing definite meanings. In Indian Philosophy, such cognition of meaning is called Śābdabodha. In the process of Śabdabodha, it is very important to discuss the central nucleus of a sentence because the meaning revolves around the nucleus of a sentence.