To give my own examples: As a pixel artist it drives me nuts when people call anything pixel adjacent "sprite art", because a sprite is just any art made to represent an object/character in 2D, and can be pretty much any art style or even be a 3D model in some cases.
Similarly, the weird conflation people seem to have of voxel art with pixel art. They both have very different design principles, and turning pixel art 1:1 into voxel art doesn't often work as intended for either style.