"Kaufen": To buy or purchase. This emphasised the mutual transaction of cash from a commodity in unambiguous terms (OK, it can be used metaphorically too in a similar fashion to English: "Das kauf' ich Dir nicht ab" = "I don't buy [=believe] that"). Previously yr in addition to a half, https://connerekqwa.wikiusnews.com/807507/the_best_side_of_kaufen