葎: any of various plants of order Gentianales or Urticales, that form thickets, often have thorns and form vines, and prefer wet or disturbed soils; generally regarded as weeds

a bee, a wasp, a hornet or the like

起こる: to happen / 興る: to become prosperous / 熾る: (of a fire) to start burning (alternative to 起こる) / 怒る: to become angry; to scold

北栗鼠: a red squirrel (Sciurus vulgaris)