A compound sentence joins two or more independent clauses with a coordinator such as and, for, or, but, or a semicolon. An independent clause is a sentence that can stand alone as a sentence as it represents a complete thought. In the case of the sentence above, the independent clauses that make up the compound sentence have been brought together by the coordinator "or".
an adverb is a word or phrase that modifies or qualifies an adjective, verb, or other adverb or a word group, expressing a relation of place, time, circumstance, manner, cause, degree, etc.