The subject is the part of a sentence that tells who or what the sentence is about.

The predicate is the part of a sentence that tells something about the subject, usually containing a verb.

A conjunction is a word that connects clauses or sentences, such as 'and', 'but', or 'or'.

A compound sentence is a sentence that contains at least two independent clauses joined by a conjunction.

A complex sentence is a sentence that contains one independent clause and at least one dependent clause.

An independent clause is a group of words that can stand alone as a sentence, containing a subject and a verb.

A dependent clause is a group of words that cannot stand alone as a sentence and usually begins with a subordinating conjunction.