In English, there are several words for which you capitalize the first letter, and it changes the meaning and the pronunciation. One example is polish (to rub something to make it shine), and Polish (someone from Poland).
Without looking it up on the internet, what other words can you think of?
Do you know of any similar games in other languages?
turkey / Turkey
miss / Miss
???
Good guesses. But they do not satisfy the second part, which is that it changes the pronunciation. I will say with one of your guesses, you are on the right track.
I’ll contemplate on this and see if I can figure something out. I love these kind of word adventures.
…
Thought of one: lima(as in the bean)/Lima(Peru)
Fantastico! I had not heard of that one.
I’m still contemplating this challenge. 
I assume that any of the capitalized words are proper nouns or names. I’m continuing to work on it. It’s a fun game. Thank you @Bando for this little activity.