Difference between transitive and intransitive verb
A verb can be used both ways as transitive as well as intransitive.
If, in a sentence, the action passes over from the subject to the object, the form of the verb is transitive. You will see some objects after the verb.
He went to his house.
He bought a pen.
I wrote the answer sheet.
If, in a sentence, the action does not pass over to the object, or it is a state of being; then the form of the verb is intransitive. Sometimes you will not see anything after the verb.
My sister cried.