The classic Zhou-dynasty Chinese ranks —
公 (Duke, gōng),
侯 (Marquis, hóu),
伯 (Count, bó),
子 (Viscount, zǐ),
男 (Baron, nán) — are the same five used to translate the corresponding European peerage. So British dukes are
公爵, marquesses are
侯爵, etc. — Chinese
爵位 vocabulary maps onto European nobility surprisingly cleanly.