barter
131Cucuteni-Trypillian culture — Characteristic example of Cucuteni Trypillian pottery …
132exchange — I (New American Roget s College Thesaurus) n. reciprocity, substitution; trade, barter, commerce; conversion, interchange; market. See business, transfer. II (Roget s IV) n. 1. [The act of replacing one thing with another] Syn. transfer,… …
