Doodad and Something

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

Something and doodad are semantically related. In some cases you can use "Something" instead a noun "Doodad".

Something noun - One that has a real and independent existence.

Doodad and something are semantically related. Sometimes you can use "Doodad" instead a noun "Something".