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

蝦夷[ezo] peoples formerly of northern Japan with distinct language and culture (i.e. the Ainu)
青竜蝦[shako] mantis shrimp (any marine crustacean of order Stomatopoda, esp. the species Oratosquilla oratoria)
車蝦[kurumaebi] kuruma prawn (Marsupenaeus japonicus)
蝦蟆[hikigaeru] toad (esp. the Japanese toad, Bufo japonicus)
蝦虎魚[haze] goby (fish)

竜蝦[iseebi] spiny lobster (esp. Japanese spiny lobster, Panulirus japonicus)
蝦夷松[ezomatsu] Yezo spruce (Picea jezoensis)
蝦夷菊[ezogiku] Chinese aster
蝦腰[ebigoshi] bent (with age)