Synonyms for Japan (same or very similar meaning)
WordNet sense 1 (a constitutional monarchy occupying the Japanese Archipelago; a world leader in electronics and automobile manufacture and ship building):
Nihon, Nippon
WordNet sense 2 (a string of more than 3,000 islands east of Asia extending 1,300 miles between the Sea of Japan and the western Pacific Ocean):
Japanese Archipelago, Japanese Islands
From the ODE community, based on WordNet
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