In some terminologies, the clan of the monarch, which was called "Kozoku" (皇族), "Ozoku" (王族), or "Kozoku" (公族), was excluded from the coverage of the term of Kizoku.
君主の一族を特に「皇族」「王族」「公族」などと称し、これを貴族に含めない用語法もある。