precedence (noun) – the act or state of going before or surpassing in importance or priority
BREAKDOWN: PRE- (before) + CED- (go) + -ENCE (act or state)
— a precedent is something that has happened in the past that helps make decisions regarding similar acts or situations in the future
— unprecedented means never before seen, done, or experienced; without precedent
This word is built on the root CED-, which means to go, to yield, or to withdraw.
Common CED- words include concede, exceed, procedure, recede, and succeed.
More esoteric CED- words include decedent and procedural.