Bobcats and lynx both have ear tufts, facial ruffs and beards, but all of these are more exaggerated on the lynx.
Bobcats have discrete spots and streaks. Lynx tend to be mottled, more uniform, and pale by comparison.
Bobcats may appear smaller than lynx due to shorter legs, but their weights are comparable and often even heavier than the lynx.
Bobcats and lynx also both have short tails. Lynx tails look about the same from above or below, ending with a black tip. Bobcat tails have a black tip on top and a white tip underneath.
Lynx have longer legs, especially in the back, and much bigger feet for walking on snow.