Coordinating conjunctions connect, or bridge, two parts of a sentence that have a similar form or equal importance in the sentence. For example, we can connect two or more nouns or noun phrases or two or more verbs or verb phrases, and so on. FANBOYS: for, and, nor, but, or, yet, so.
Robert and Craig are friends. (2 nouns are connected)
My favorite teacher and his beautiful wife walk to work every day. (2 noun phrases are connected)