Device and Thingummy

Device noun - A clever often underhanded means to achieve an end.

Thingummy and device are semantically related. In some cases you can use "Thingummy" instead a noun "Device".

Thingummy noun - A small article the actual name of which one either does not know or cannot remember.

Device and thingummy are semantically related. Sometimes you can use "Device" instead a noun "Thingummy".