Coexist :: Coexist (v. i.) To exist at the same time; -- sometimes followed by with.
Coexistence :: Coexistence (n.) Existence at the same time with another; -- contemporary existence.
Coexistent :: Coexistent (a.) Existing at the same time with another.
Coextend :: Coextend (v. t.) To extend through the same space or time with another; to extend to the same degree.
Coextension :: Coextension (n.) The act of extending equally, or the state of being equally extended..
Coextensive :: Coextensive (a.) Equally extensive; having equal extent; as, consciousness and knowledge are coextensive..