A sentence that has two main clauses that express two or more independent but related thoughts of equal importance is referred to as a sentence.

compound sentence

Explanation:

A sentence comprises of words that are used for the expression of interrogations, command, pleading or exclamations. At least, a sentence must consist a verb, an object and a subject. There are four main different types of sentence and they are given below;

(1). Interrogative Sentence: this type of sentence is used to ask questions.

(2). Simple sentence: this type of sentence is Declarative in nature.

(3). Imperative Sentence; this type of sentence is used in giving instructions, direction or command.

(4). Exclamatory Sentence: this type of sentence are used to show ones emotion.

Other types of sentence are the simple sentence, compound sentence, compound complex and so on.

A compound sentence is the one defined in the question above, that is, " A sentence that has two main clauses that express two or more independent but related thoughts of equal importance..."