Differences between compound and compound complex sentences:
A.). Compound Sentences: ==> A compound sentence has two independent clauses. An independent clause is a part of a sentence that can stand alone because it contains a subject and a verb and expresses a complete thought. - Basically, a compound contains two simple sentences. - These independent clauses are joined by a conjunction ==> (FANBOYS)
Subject + Verb + Object (For, And, Nor, But, Or, Yet, So.).
Subject + Verb + Object; Subject + Verb + Object (Conj., Adv.). Subject + Verb + Object
B.). Complex Sentence: ==> Complex Sentences - A complex sentence is an independent clause joined by one or more dependent clauses. A dependent clause either lacks a subject or a verb or has both a subject and a verb that does not express a complete thought. - A complex sentence always has a subordinator (as, because, since, after, although, when) or relative pronouns (who, that, which).
Dependent Clause + Subject + Verb + Object, Subject + Verb + object =====> Subject + Verb + Object + Dependent Clause + Subject + Verb + Object
Hope that helps!!!! : )