This is the 9926th most frequent German word.
ohio
"Ohio" is not a German word; it is the name of a U.S. state.
Here, 'Ohio' is used as a proper noun referring to the U.S. state.
Ich habe gehört, dass Ohio einen schönen Nationalpark hat.
I heard that Ohio has a beautiful national park.
'Ohio' in this context refers to the Ohio River as a geographical feature.
Der Fluss Ohio fließt durch mehrere Bundesstaaten.
The Ohio River flows through several states.
Again, 'Ohio' is a proper noun referring to the state and emphasizes someone's origin.