What is the difference between a subordinate clause and an independent clause?

A subordinate clause is a group of words that contains a subject and a predicate, while an independent clause is a group of words that contains a subject but no predicate.

A subordinate clause can be used to provide additional information or to modify a main clause, while an independent clause can be used to stand alone as a complete thought.

Here is an example of a subordinate clause:

The dog barked at the mailman.

Here is an example of an independent clause:

The dog barked at the mailman.