It is a cultural symbol, especially a musical style formed by the Korean Wave.
I usually see a lot of reactions, most of which refer to Korean idol culture. But many music critics will also say that a song sounds very kpop, so it can also represent a noun of musical style.
There are many kinds of Kpop dances, such as jazz, Hiphop, Poppin, Locking, House, urban and so on. Occasionally, there are elements of local traditional dances, such as belly dance style, samba style, Chinese style and so on.