"Archetype" was used by psycho-theorist Carl Jung to describe unconscious concepts and experiences that manifest consciously in different ways. In astrology, archetypes can be a useful way to understand the signs and planets.

This website uses "the collective" to essentially mean society at large, a religious community, a local community, etc.

Psychotheorist Carl Jung used the term Collective Unconscious to refer to a commonality that all humans share through our unconscious, as opposed to Freud's idea of the personal unconscious.

The Shadow is a term used by psychotheorist Carl Jung to mean the perceptions, feelings, motives, beliefs, judgements, etc., about ourselves that are unconscious, repressed or undeveloped.