This is the 379th most frequent Indonesian word.
jepang
"Jepang" means "Japan" in English.
In this sentence, 'Jepang' is used as a proper noun to denote the name of a country.
Saya ingin mengunjungi Jepang tahun depan.
I want to visit Japan next year.
Here, 'Jepang' serves as an adjective describing the origin of the guitars, implying that they are made in Japan.
Gitar buatan Jepang sangat berkualitas.
Guitars made in Japan are very high-quality.
In this context, 'Jepang' refers to 'Japan' as the subject of the history that was studied.