以東[itou] ... and eastward
関東[kantou] Kantou (eastern half of Japan, including Tokyo)
関東弁[kantouben] Kantou dialect
極東[kyokutou] Far East
近東[kintou] Near East

古今東西[kokontouzai] all times and places
広東[kanton] Guangdong (China)
広東語[kantongo] Cantonese
至東京[itarutoukyou] leading to Tokyo
真東[mahigashi] due east

暗証[anshou] code
暗証化[anshouka] encryption
暗証番号[anshoubangou] personal identification number
証し[shirushi] mark
印鑑証明[inkanshoumei] certification of official registration of a seal

引証[inshou] quotation
仮受取証[kariuketorishou] temporary receipt
会員証[kaiinshou] membership certificate
外国人登録証明書[gaikokujintourokushoumeisho] certificate of alien registration
確証[kakushou] positive proof