Coexistence :: Coexistence (n.) Existence at the same time with another; -- contemporary existence.
Existence :: Existence (n.) The state of existing or being; actual possession of being; continuance in being; as, the existence of body and of soul in union; the separate existence of the soul; immortal existence..
Existence :: Existence (n.) Continued or repeated manifestation; occurrence, as of events of any kind; as, the existence of a calamity or of a state of war..
Existence :: Existence (n.) That which exists; a being; a creature; an entity; as, living existences..
Self-existence :: Self-existence (n.) Inherent existence; existence possessed by virtue of a being's own nature, and independent of any other being or cause; -- an attribute peculiar to God..