protective face mask
any mask worn on the face for some protective function
respirator
device designed to protect the wearer from inhaling harmful dusts, fumes, vapors, or gases
dust mask
mask to protect from dust
plague mask
distinctive long-nosed mask worn by plague doctors
diving mask
watertight face cover with view-ports for improving underwater vision
fly mask
mask used on horses
goaltender mask
mask worn by goaltenders in ice hockey
surgical mask
oro-nasal cover worn by health professionals to reduce spread of airborne pathogens
cloth face mask
mask made of common textiles worn over the mouth and nose
Orinasal mask
breathing mask that covers the mouth and the nose only
face mask
part of a sports helmet that protects the face