ground vs ground

Because it's nice to be positive sometimes, behold this craigslist post:

ANTIQUE SNUFF BOX - $120 (Westmount)

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Lovely little treasure.
Snuff is ground tobacco.

I stared at this for a little bit, thinking about some kind of narcotic truffles, before my brain sorted itself out.

It's really quite the all-purpose word though, eh? "I had grounds to search the parade grounds for coffee grounds that were ground into the ground." Nice.