When coordinating effectively you are doing all of the following

using a comma and a coordinating conjunction to indicate two coordinated independent elements in the same sentence.

relating equally important ideas in a sentence.

within clauses, showing the comparative equality of importance of the words or phrases used to explain an issue.

indicating the relative balance between two issues in the sentence over the other issue(s) in the sentence.

linkiing main clauses, words, or phrases with a correlative conjunction.