I was under the impression that Romanian & Roma were two completely different cultures/ethnicities that only sounded similar.

With the Roma being ancient Indus valley people.

Edit: Wikipedia does suggest that Romania does have one of the largest Roma pops in the world at about 3% of their census population, and estimates of anywhere from 600k-1.8 million people (of Romania's 19 million).

Wikipedia suggests there's similar size 1 mil diasporas in the US, France, England, Brazil, Germany, etc.

I was under the impression that Romanian & Roma were two completely different cultures/ethnicities that only sounded similar.

With the Roma being ancient Indus valley people.