The best replacement for mask is mask.

The best alternatives to mask are rated as following:
★★★★★  mask
★★★★★  respirator
★★★  nasal cannula
★★  masque
★★  non rebreather
★★  dynamite kid
★★  netmask
★  layer
★  scrub
★  mirror
★  costume
★  tension mask
★  sharpen
★  facade
★  nonrebreather
★  ocarina of time
★  face
★  iq nasal mask
★  peel
★  n95
★  venturi mask
★  reticle
★  18
★  nasal mask
★  aperture grille
★  variable length subnet mask
  apocafist
  nasal pillow
  steam first
  non rebreather mask
  subnet
  hide ip address
  deep conditioner
  cleanser first
  green tea moisturizer
  default subnet mask
  isolation mask
  toner first
  endotracheal tube
  aperture grill
  full face mask
  kid muscle
  snorkel mask
  cannula
  solder non defined mask
  hide your ip address
  conditioner
  subnet mask
  masks
  hot oil
  red skull

Your alternative for mask is not listed? Suggest!
Speaking about mask, one probably shouldn't forget about headgear.

Other search terms related to mask and their ratings are:
★★★★★ headgear
★ head gear
★ pen tool
★ hood
face
egg white
You have in mind a companion for mask and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of mask in all years. Click on graph for more.
mask
mask
respirator