A lot vs. Alot: 9 Grammatical Pitfalls
life instinct n.
In psychoanalytic theory, the instinct of self-preservation and sexual procreation.
death instinct n.
A primitive impulse for destruction, decay, and death, manifested by a turning away from pleasure, postulated by Sigmund Freud as coexisting with and opposing the life instinct. Also called Thanatos.