Noun. The study of card games.
As in: James Bond specializes in cardiology (among other things.)
(Oh wait, that's a poor example. Here's another:)
James Bond practices his cardiology skills a lot.
(That's pretty bad, too. Here's another attempt:)
When he isn't hitting on women or shooting people or drinking martinis (shaken, not stirred) or using cool spy gadgets or whatever it is he does at parties otherwise (also, James Bond is generally a terrible party guest; seriously, you would probably hate him in real life), James Bond excels at cardiology.