Dean Jacobs proposed searching for
adjectives that are commonly applied only to a single noun
(or maybe two or three synonyms).
Linguists call this sort of thing fixed colocation.
Here are some examples:
Some examples are technical words,
coined or specialized for a particular purpose:
Sometimes a cliche can provide a weak example:
Untimely (end or death)
Insatiable (appetite, thirst, desire, lust)
Voracious (appetite, reader)
Brute (strength, force)
Subliminal (message or advertising)
Some adverb examples:
Inextricably (intertwined, linked)
Please mail me if you
disagree with any of these or have other suggestions.
Mike O'Brien adds the following:
Interesting words, sort of in the same vein but not quite:
Tarmac, normally called asphalt, but at an airport it is tarmac.
Scudding: Seems to be a verb that only applies to clouds. Although I
once read that a ship could scud too.
Jut: A verb that applies to stationary, inanimate objects.