What is the origin of the idiom "strong suit" and when to use it?

The idiom "strong suit" is derived from card games, particularly the game of bridge. In card games, a "suit" refers to one of the four categories of cards: hearts, diamonds, clubs, and spades. Each player typically has a suit they are strongest in, meaning they have a higher number of cards from that suit and are more likely to win tricks when that suit is played. This idiomatic expression used to refer to someone's area of expertise or competence, the skill or quality they excel in the most. It implies that just as a player is likely to win when playing their strongest suit in a card game, an individual is likely to succeed or perform exceptionally well when utilizing their primary skill or advantage in a particular situation.