two-way glass
- observationAttentive watching or remark
- surveillanceSystematic observation of subjects
- interrogationFormal, probing examination
- mirrorReflective viewing surface
- reflectionReturned light or thought
spy · window · police · detective · witness · lineup · tinted · secret · watching · privacy · coated · film · transparent · opaque · viewing · booth · hidden · interview
transparency vs. opacity
two-way glassopaque glass
Translucent but not transparent
frosted glass · tinted glass · mirrored glass · brick wall · barrier