I've never heard of the word "majority" meaning "relative majority" without that qualifier, but I also wouldn't use the phrase "relative majority" to refer to w

I've never heard of the word "majority" meaning "relative majority" without that qualifier, but I also wouldn't use the phrase "relative majority" to refer to what to me is clearly a minority, so what do I know :) Nevertheless, it might be better to use unambiguous terms like "plurality", or define ones terms, when writing for an international audience.