Edge loops 3D models use connected edge sequences to define topology for deformable, animated objects (like characters), while 2D drawing 3D models are made by extruding or revolving 2D shapes (e.g., a circle for a cup) into 3D space.
Edge loops support smooth deformation—think a character’s arm bending—and are essential for animation, as they help the model hold its shape when manipulated. 2D drawing models are simpler for static objects, relying on 2D bases to build 3D forms.
Choose edge loops for animated characters; use 2D drawing methods for basic props or products—both are 3D software tools but serve different purposes.