Suggestions Needed

Pls suggest what terms I can use later on in the novel.

Like Soul Master or Spirt Master?

Pope Palace or Supreme Pontiff Palace?

Hall of Elders or Spirit Temple?

What term I can Use in Ranks or Level?

Worship or Supreme Elder or Priest?

Pls Help me.

P.S.,

I will upload 2 chappy tmrw, as I owe one chapter yesterday