This is the 7796th most frequent Russian word.
ирландия
Ireland.
The word 'Ирландию' is used here as a proper noun in the accusative case, as it is the destination of travel.
Я мечтаю поехать в Ирландию летом.
I dream of traveling to Ireland in the summer.
The word 'Ирландия' is used here as a subject in the nominative case, referring to the country.
Ирландия славится своей зелёной природой.
Ireland is famous for its green nature.
The word 'Ирландии' is used in the genitive case, indicating origin.