Coordinating conjunctions are useful for connecting sentences but compound sentences often are overused. While coordinating conjunctions can indicate some type of relationship between the two independent clauses in the sentence they sometimes do not indicate much of a relationship. The word "and" for example only adds one independent clause to another without indicating how the two parts of a sentence are logically related. Too many compound sentences that use "and" can weaken writing.Clearer and more specific relationships can be established through the use of complex sentences.