九つ[kokonotsu] nine
九夏[kyuuka] summer
九回戦[kyuukaisen] regulation game
九官鳥[kyuukanchou] hill myna (species of mynah bird, Gracula religiosa)
九牛の一毛[kyuugyuunoichimou] mere fraction

九々[kuku] multiplication table
九月[kugatsu] September
九工大[kyuukoudai] Kyushu Institute of Technology
九穀[kyuukoku] the nine grains
九死に一生[kyuushiniisshou] narrow escape from death

へし折る[heshioru] to smash
一折り[hitoori] one box
右折[usetsu] turning to the right
右折禁止[usetsukinshi] No Right Turn!
我を折る[gawooru] to concede a point

解折[kaiseki] analysis
回折[kaisetsu] diffraction
回折格子[kaisetsukoushi] (diffraction) grating
曲折[kyokusetsu] windings
九折[kyuusetsu] many turns (in a road)