To quote Wikipedia, "Romance languages (less commonly Latin languages, or Neo-Latin languages) are the modern languages that evolved from Vulgar Latin between the third and eighth centuries."
"Piscina" is also "pool" in Romanian, which is, you guessed, a Romance language.
Maybe it is just an English thing, but Romance languages are anything evolved from latin (predumably spread by the Roman empire, hence "romance"). Portuguese is included in the list, fwiw.
That's what they're called: https://en.wikipedia.org/wiki/Romance_languages