What is another word for "boon"?

Roget's Thesaurus (1911) lists these synonyms for "boon": acquaintance, advantage, advocate, all, ally, alter, ambo, amigo, and, aright, associate, auxiliary, bedfellow, behalf, behoof, beneficial, benefit, best, blessing, boot, bosom, casual, chamber, chance, childhood, chum, classman, classmate, colleague, commendable, common, companion, compatriot, compeer, comrade, confidante, confrere, consummation, copartner, countryman.