1. For the purposes of this Directive:

(a) "consumer" means any natural person who is acting for purposes which are outside his trade, business, craft or profession;

(b) "trader" means any natural persons, or any legal person irrespective of whether privately or publicly owned, who is acting, including through any person acting in his name or on his behalf, for purposes relating to his trade, business, craft or profession;

(c) "sales contract" means any contract under which the trader transfers or undertakes to transfer the ownership of goods to the consumer and the consumer pays or undertakes to pay the price thereof, including any contract having as its object both goods and services;

(d) "service contract" means any contract other than a sales contract under which the trader supplies or undertakes to supply a service to the consumer and the consumer pays or undertakes to pay the price thereof;