Initiation rite and Rite of passage

Rite of passage and initiation rite are semantically related In some cases you can replace phrase "Rite of passage" with "Initiation rite", this phrases are similar.

Rite of passage noun - A ritual performed in some cultures at times when an individual changes status (as from adolescence to adulthood).

Initiation rite and rite of passage are semantically related in ritual performed for change of status topic. You can use "Initiation rite" instead a noun phrase "Rite of passage".