三角函数[sankakukansuu] trigonometrical function
投函[toukan] mailing
函れる[ireru] to put in
函蓋[kangai] box and cover
函渠[kankyo] drain with an oblong cross-section

函人[kanjin] armorer
函嶺[kanrei] the Hakone Mountains
函数[kansuu] function (e.g. math, programming, programing)
逆函数[gyakukansuu] inverse function

温灸[onkyuu] moxa cautery
針灸[shinkyuu] acupuncture and moxibustion
灸治[kyuuji] treatment with moxa
灸点[kyuuten] moxa-treatment points
灸をすえる[kyuuwosueru] to rake over the coals

灸虫[yaitomushi] schizomid (any arachnid of order Schizomida)
鍼灸師[shinkyuushi] acupuncturist and practitioner of moxibustion
灸羽田[yaitohata] malabar grouper (Epinephelus malabaricus)
お灸を据える[okyuuwosueru] to rake over the coals