Contract
Agreement
noun, verbal noun
けいやく
条件 (じょうけん) Condition, Conditions, Terms, Requirements
条約 (じょうやく) Treaty, Pact, Agreement
契約 (けいやく) Contract, Agreement
盟約 (めいやく) Pledge, Pact
誓約 (せいやく) Vow, Pledge, Oath, Covenant
約款 (やっかん) Agreement, Stipulation, Article, Clause
Signing that Contract would be as dumb as feeding cake けい to a yak やく