there are loads of diffrent types of dances theres not just ballet what everyone thinks there is:
ballet: you need ballet for every dance as you need all the counts and the points andalso the balance.
tap: tap is where you have to have proper type of shoes with metal squares on the bottom of them
jazz: is just normal dancing but there is a lot of jumps and spins.
modern: is the same as jazz the samethinglike spins and jumps and runs.
ballroom: in the catageroy ballroom ther are loads of dances like the tango and jive ballroom you have to wear very high shoes though to get the right rthyem.
hip hop/street/break dancing: are all the same thing they have simple moves in but can be diffuclt at the same time.