暗示[anji] hint
意思表示[ishihyouji] declaration of intention
開示[kaiji] disclosure (legal)
求愛誇示[kyuuaikoji] courtship display
教示[kyouji] instruction

訓示[kunji] instruction
啓示[keiji] revelation (i.e. divine revelation)
掲示[keiji] notice
掲示板[keijiban] bulletin board
誇示[koji] ostentation