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

蓐瘡[jokusou] bedsore
蓐傷[jokushou] bedsore

蓐草[jokusou] straw or hay (layed out in barns for livestock)
病蓐[byoujoku] sickbed