Linking words are important to connect sentences smoothly and allow readers to easily transition between ideas. They help convey thoughts effectively and engage readers. Appropriate use of linking words enables ideas to flow naturally and for readers to follow the writing easily. Different types of linking words like independent markers, coordinating conjunctions, and subordinating conjunctions are used to join independent clauses and dependent clauses in compound, complex, and compound-complex sentences. The document provides examples of how each type can be used.