朱欒[zabon] shaddock
朱印[shuin] red seal
朱印状[shuinjou] license with a red seal (licence)
朱印船[shuinsen] shogunate-licensed trading ship
朱顔[shugan] flushed face

朱子学[shushigaku] neo-Confucianism (based on the teachings of Zhu Xi and his followers)
朱書[shusho] writing in red
朱書き[shugaki] writing in red
朱鞘[shuzaya] red-lacquered sword sheath

緋い[akai] red
緋衣草[higoromosou] salvia (sage family)
緋鯉[higoi] red carp
猩猩緋[shoujouhi] scarlet
緋縅し[hiodoshi] scarlet-threaded suit of armor (armour)

緋縅し鎧[hiodoshiyoroi] scarlet-threaded suit of armor (armour)
緋の衣[hinokoromo] scarlet robe
緋色[hiiro] brilliant red
深緋[fukahi] deep scarlet