a sale is simply the transfer of the ownership of MEST particles by one person to another for an agreed price or else it is the delivery of services by one person to another for an agreed price. A purchase is simply the acquisition of MEST particles or services by one person from another for an agreed price. These are the basicbusiness transactions -sales and purchases. And you can view sales and purchases in terms of flows. A sale is an outflow of MEST particles or services by one person to another for an agreed price. A purchase is an inflow of MEST particles or services by one person from another for an agreed price. (BPL 14 Nov 70 II)
PURCHASE
ScnMaster
a hold or position of advantage for accomplishing something. —Quotes Book Glossary (app. Nov 1990)