It really is a little bit far more informal than important, particularly when applied following a noun and linking verb: Pace is key at this stage. central (somewhat formal) most vital: Reveal to us relating to this occasion sentence: The phrase from the instance sentence would not match the entry https://dust-seal-442-7102-0107306.vblogetin.com/42106110/how-dust-collar-442-7106-01-can-save-you-time-stress-and-money