capitonym /KAP-i-toh-NIM/. noun. A word that changes meaning (and sometimes pronunciation) when capitalized, such as August and august, Earth and earth, Polish and polish. A portmanteau of capital + -onym (word or name).
“An herb store owner, name of Herb,
Moved to rainier Mt. Rainier,
It would have been so nice in Nice,
And even tangier in Tangier.”