purchaser(n = noun.person) buyer, emptor, vendee - a person who buys;
is a kind of client, customer
has particulars: customer agent, home buyer, orderer
Derived form verb purchase₁

1.  One who purchases; one who acquires property for a consideration, generally of money; a buyer; a vendee. [1913 Webster]

2.  One who acquires an estate in lands by his own act or agreement, or who takes or obtains an estate by any means other than by descent or inheritance. [1913 Webster]

N  purchase, emption, buying, purchasing, shopping, preemption, refusal, coemption, bribery, slave trade, buyer, purchaser, emptor, vendee, patron, employer, client, customer, clientele, purchased, caveat emptor, the customer is always right.