What is "coordinate conjunctions"

Coordinate \Co*["o]r"di*nate\, a. [Pref. co- + L. ordinatus, p. p. of ordinare to regulate. See Ordain.] Equal in rank or order; not subordinate.

Whether there was one Supreme Governor of the world, or many co["o]rdinate powers presiding over each country.
--Law.

Conjunctions joint sentences and co["o]rdinate terms.
--Rev. R. Morris.

Co["o]rdinate adjectives, adjectives disconnected as regards one another, but referring equally to the same subject.

Co["o]rdinate conjunctions, conjunctions joining independent propositions.
--Rev. R. Morris.