(1)后续合同；后订合同
修改或取代原始合同〔primary contract〕的合同。

(2)分包合同
(=subcontract)

• ad arbitrium
• ad assisas capiendas
• horca
• hordera
• horderium
• horizontal
• horizontal agreements
• horizontal integration
• horizontal measurement
• horizontal merger
• horizontal price-fixing
• horizontal property acts
• horizontal restraint(of trade)
• horizontal union
• hornage
• hornagium
• hornegeld
• horner
• Horne Tooke's Act
• horngeld
• horning
• hornswoggle
• horn tenure
• horn with horn
• horoscope reading