Microdots and Microdot

Microdot and microdots are semantically related In some cases you can use "Microdot" instead a noun "Microdots".

Microdot noun - Photograph reduced to the size of a dot (usually for purposes of security).

Microdots and microdot are semantically related in lsd topic. You can use "Microdots" instead a noun "Microdot", if it concerns topics such as lysergic acid diethylamide.