In a game's rulebook I have heroes fighting monsters. Both have numeric "levels" to indicate their overall power/strength. Usually there are a lot of creatures of the same level, because they are equally good, and heroes of different and/or same "level" join a party to go on a quest.
For various reasons I don't want to use "level", but is "rank" a suitable synonym? Can a person have a numeric "rank" (and not a title like "Sergeant"). Instead of "he is a 4th-level wizard", is "he is a wizard of 4th rank" correct? Can multiple creatures have the same "rank", or does this imply a continuous ranking like in a leader board?