fog

nouns

droplets of water vapor suspended in the air near the ground
fog
is derived from
foggy
is a type of (narrower)
a cloud of solid or liquid particles in a gas
aerosol
an atmosphere in which visibility is reduced because of a cloud of some substance
fog, fogginess, murk, murkiness
is derived from
foggy
confusion characterized by lack of clarity
daze, fog, haze
is derived from
foggy

verbs

make less visible or unclear
"The stars are obscured by the clouds"; "the big elm tree obscures our view of the valley"
becloud, befog, cloud, fog, haze over, mist, obnubilate, obscure