Interesting question.
Actually there are two kind of decks: the french one and the spanish one. The french one is the one with hearts, diamonds,... and the spanish one is the one with blades, golds, coups,...
In the french deck:
King=rey
Queen=reina
J...=jota
ace=as
In the spanish deck:
King=rey
Horse=caballo
J...=sota
ace=as
regards.
Fernando