(a part or total) loss of memory

memory loss

in an unnatural deep sleep because of injury or illness

deep unconsciousness

the place of an actual or imagined event; a view; one of the parts, shorter than an act, into which some plays and operas are divided

setting of a performance or event

the absence of sound; the condition of not speaking, answering (questions, spoken or written) or making comments etc

absence of sound, speech