栄枯[eiko] vicissitudes
栄枯盛衰[eikoseisui] ups and downs of life
黄枯茶[kigaracha] bluish yellow
夏枯れ[natsugare] summer slump
枯らびる[karabiru] to dry up

乾枯[kanko] completely drying up
枯らす[karasu] to let dry
枯れる[kareru] to wither (of a plant)
枯枝[kareeda] dead branch (or twig, etc.)
枯れ野[kareno] desolate field

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