The rumba is a dance that started in Cuba, and also the music people dance it to. Couples hold each other and move with a slow, rolling hip motion. In ballroom classes you will meet a tidy, competition version. In Cuba the older rumba is more of a street and party dance, with singing and drums, and it feels freer. English borrowed the word from Spanish and kept the spelling. People say dance the rumba or put on a rumba. It is not the same as salsa, though both come from the same part of the world and share a family feeling. You will hear the word in dance schools, old films, and Latin-music playlists. In that world it is everyday; outside it, a little old-fashioned.