安全保障条約[anzenhoshoujouyaku] US-Japan Security Treaty
違約[iyaku] breach of contract
違約金[iyakukin] penalty for contract breach
一粒子既約[ichiryuushikiyaku] one particle irreducible (physics)
化学兵器禁止条約[kagakuheikikinshijouyaku] chemical weapons ban treaty

仮条約[karijouyaku] provisional treaty
会う約束[auyakusoku] rendezvous
会員規約[kaiinkiyaku] membership agreement (e.g. for a credit card)
解約[kaiyaku] cancellation of contract
確約[kakuyaku] firm promise

あっ縮[asshuku] compression
圧縮空気[asshukukuuki] compressed air
圧縮性[asshukusei] compressibility
圧縮率[asshukuritsu] compressibility
畏縮[ishuku] wince

音声圧縮[onseiasshuku] voice compression
強縮[kyoushuku] tetanus
恐縮[kyoushuku] feeling obliged
凝縮[gyoushuku] condensation
緊縮[kinshuku] shrinkage