What is the difference between transitive and intransitive verbs?

The difference between transitive and intransitive verbs is that transitive verbs demand a direct object, while intransitive verbs do not.

A direct object is the person or thing that a transitive verb acts upon (e.g., “I love pistachios”).

Intransitive verbs convey a clear idea without a direct object (e.g., “Richard swims”).