What is another word for "bond"?

Roget's Thesaurus (1911) lists these synonyms for "bond": accommodate, accommodation, advance, agent, agree, agreement, and, attest, back, bargain, barter, bird, candle, captive, cartel, caveat, charter, clench, clinch, close, clutch, come, commercial, compact, complete, completion, compromise, conclude, concordat, confirm, contract, convention, conventional, covenant, custody, deal, demise, detain, detention, diplomacy.