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Can you even call something intangible an everyday object?

Technically the color Pink is white light minus the color green. Whereas shadow is light minus some light. Is Pink intangible also?

Yes, going by the definition of "sensible by touch" for tangible. That would make something like smoke intangible.

That's a good one. I also like 'hole'.

"Smoke" is often a good one to stump.

Is a song an object?

Is a ghost?

A finish line?