Translation guide
The English word "Magyar" refers to the Hungarian people or language. In Japanese, it is expressed using specific terms for the ethnic group and the language.
Referring to the Magyar ethnic group or Hungarian people in general.
Standard term for the Magyar people, using the katakana rendering of 'Magyar' plus 人 (person/people).
マジャール人はハンガリーの主要民族です。
The Magyars are the main ethnic group of Hungary.
More common term for 'Hungarian person/people', not specific to the Magyar ethnicity but widely used.
彼はハンガリー人です。
He is Hungarian.
Referring to the Magyar language, also known as Hungarian.
Term for the Magyar language, using katakana for 'Magyar' plus 語 (language).
マジャール語はウラル語族に属します。
The Magyar language belongs to the Uralic language family.
Standard term for the Hungarian language, more commonly used than マジャール語.
ハンガリー語を勉強しています。
I am studying Hungarian.
マジャール人/語 is more specific to the Magyar ethnicity and language, while ハンガリー人/語 is the general term for Hungarian. In most everyday contexts, ハンガリー is sufficient and more widely understood.