Caucasians, defined as light-skinned people of European, northern African, western Asian or Indian decent, have different facial features than Asian people. Facial features vary greatly from person to person, but there are some specific attributes that make someone distinctly Caucasian or Asian, and those with mixed heritage will often have features from both worlds.
Overall, Asian faces are generally wider than Caucasian faces. These differences are generalisation, though, as Asian faces tend to vary by ethnicity. For example, Japanese faces are relatively long with chubby cheeks and Chinese faces are relatively more narrow. Caucasians tend to have more masculine features, by the standards of the rest of the world. Also, Asian cheekbones tend to extend outward while Caucasian cheekbones protrude upward.
Caucasian brow bones tend to be deeper, with eyes more sunken than Asian faces. Asian brow bones are generally much more shallow. Generally speaking, Asian faces have slanted and slightly narrow eyes, while Caucasian eyes are rounder.
Asian noses tend to have lower bridges, and Caucasian noses extend slightly upward. The bridge of the nose is the area of the nose between the eyes. The lower bridge area on Asian faces can also contribute to the slightly wider appearance of the face.
Like other facial feature generalisation, Asians generally have wider foreheads. Caucasian foreheads are usually slightly more narrow.
Caucasian faces tend to have longer and sharper chin lines, while Asian faces generally have shorter and flatter. Again, these are generalisation, and vary from group to group. For example, Chinese faces can generally have lantern jaws, Japanese typically have sharp chin lines and Caucasians often have square-shaped jaws.