masking

nouns

the act of concealing the existence of something by obstructing the view of it
"the cover concealed their guns from enemy aircraft"
cover, covering, masking, screening
is derived from
mask
the blocking of one sensation resulting from the presence of another sensation
"he studied auditory masking by pure tones"
masking
is a type of (narrower)
an unelaborated elementary awareness of stimulation
"a sensation of touch"
aesthesis, esthesis, sensation, sense datum, sense experience, sense impression
scenery used to block the audience's view of parts of the stage that should not be seen
masking, masking piece