Upvote:3
Looks like a "Use":
denote[s] the special liturgical customs which prevailed in a particular diocese or group of dioceses
and a "Rite" is :
the whole complex of the services of any Church or group of Churches
In practice, it looks like a "Use" is an accommodation granted by the Pope acknowledging the Bishop's desire for local customs (or a religious order's customs) to form part of worship and a rite is the state of a local church as it formed and took shape because of geographic boundaries in the early church.