strong suit

Noun strong suit has 2 senses

• strong suit(n = noun.group) - a long suit including high cards;
is a kind of long suit
is a part of bridge hand

• strong suit(n = noun.attribute) forte, long suit, metier, speciality, specialty, strength, strong point - an asset of special worth or utility; "cooking is his forte"
is a kind of asset, plus
has particulars: green fingers, green thumb