健忘[kenbou] forgetfulness
健忘症[kenboushou] amnesia
度忘[dowasure] lapse of memory
胴忘[douwasure] lapse of memory
年忘れ[toshiwasure] year-end drinking party

備忘[bibou] reminder
備忘録[bibouroku] notebook
忘る[wasuru] to lose something
忘れっぽい[wasureppoi] forgetful
忘れる[wasureru] to forget

草臥れる[kutabireru] to get tired
遺草[isou] posthumous works
一年草[ichinensou] annual (plant)
詠草[eisou] draft poem
下草[shitakusa] undergrowth

仮名草紙[kanazoushi] story in the kana
伽草子[togizoushi] fairy-tale book
海草[kaisou] marine plant
乾草[kansou] hay
甘草[kanzou] liquorice

萱鼠[kayanezumi] harvest mouse (Mus minutus)
萱草[kanzou] hemerocallis
萱葺[kayabuki] thatch roof
藪萱草[yabukanzou] Hemerocallis fulva var. kwanso (variety of daylily)
萱草[wasuregusa] Hemerocallis fulva var. kwanso (variety of daylily)

茅萱[chi] cogon grass (Imperata cylindrica)
刈萱[karukaya] Themeda triandra var. japonica (variety of kangaroo grass)
浜萱草[hamakanzou] daylily
野萱草[nokanzou] day lily (Hemerocallis fulva var. distiche)