two dimensions; fictional (in relation to anime, manga, etc.); drawn; two-dimensional
three dimensions; 3D; 3-D; real world; IRL; in real life
another dimension; different level; whole other level
fourth dimension; four dimensions; 4D
fourth dimension; four dimensions; 4D
high dimension; higher dimensions
low-level; trivial; coarse; low-dimension
dimensional regularisation; dimensional regularization
dimensionality reduction; dimension reduction