Curvy refers to the early models of the Sv, pointy the later ones (left and right pictures at the top of the page), as Husky stated the year of registration is denoted by 1997 =97, 2003 =k3 etc, not 100% on this but pretty much all curvys have interchangable parts, as do all pointies except some variances in the K3 (I think)
Other slang used ?
hth (hope this helps)
Yours for example is a curvy. which some deluded people will tell you is the best kind but everyone knows pointys are best.
Welcome and enjoy the org