Primal
Part of speech: adjective
Definition: Being the first in time, or history. Being of greatest importance; primary.
Example sentence: Because racism is not like jealousy or selfishness, it is not a primal urge or a basic instinct, it is a 400-year-old political and economic system that has infected our institutions, our culture and even our thinking.
Primordial
Part of speech: adjective
Definition: first, earliest or originalcharacteristic of the earliest stage of the development of an organism of, or relating to a primordiumprimeval
Example sentence: Water represents to me, the beginnings of life, it is where we come from in our most primordial sense. It relates to some of our deepest subconscious thinking - it's a force we can't really see or understand, we just get glimpses of. But it's a part of us all.