Precedence
Part of speech: noun
Definition: The state of preceding in importance or priority.
Example sentence: You can't have a value structure without a hierarchy. They're the same thing because a value structure means one thing takes precedence over another.
Priority
Part of speech: noun
Definition: An item's relative importance.A goal of a person or an organisation.A superior claim to use by virtue of being validly published at an earlier date.
Part of speech: adjective
Definition: Prior or antecedent in time, or preceding something else; as, priority application.Having precedence; of superior rank.
Example sentence: In digital era, privacy must be a priority. Is it just me, or is secret blanket surveillance obscenely outrageous?