This is the 6928th most frequent Russian word.
америка
"Америка" in English means "America."
Here, 'Америка' is used as a proper noun, referring to the United States of America.
Америка великая страна.
America is a great country.
In this sentence, 'Америка' is in the accusative case 'Америку', used to indicate the destination of travel.
Я мечтаю о поездке в Америку.
I dream of going to America.
Here, 'Америка' is in the genitive case 'Америки', showing possession or relation to the history.