I agree with Garoubet about this :If it travels around the room it is probably ballroom / If it is more stationary with rotation it is probably Latin/swing
Ballroom: Waltz, Foxtrot, Ballroom Tango, Quickstep, Viennese Waltz
Latin: Rumba, Salsa, Cha Cha, Argentine Tango, Merengue, Bolero, Mambo, Lambada, Samba, Bachata
Swing (sub category of Latin): Swing (triple step) Rock N Roll (single step) Jitterbug (double step) Hustle
Argentine Tango vs Ballroom Tango – Why is one style ballroom and the other Latin?
These two styles of tango are worlds apart. Once again it mainly comes back to the technique and travel. Ballroom Tango travels around the room constantly following lie of dance whereas Argentine Tango uses Latin techniques and rotates and moves more or less on the spot with bursts of travel in any direction.
I'm only adding this specification : In Quebec, we say danses latines, but you are more likely to hear danses sociales/de société than danses de salon.[...] not danses latines de salon or danses de salon latines which doesn't make sense.