He is a born merchant.
That trader is always sharp and misses no opportunity.
expert; professional; skilled practitioner
Used for someone highly skilled in a trade or profession, not limited to commerce. Often implies seasoned, practical expertise.
He is a professional cook, so his knife skills are on another level.
woman in the nightlife business; hostess; geisha; demimondaine
Specifically refers to women working in bars, nightclubs, or traditional entertainment districts. Often used euphemistically or in historical contexts. Cross-referenced with 商売女.
See also: 商売女
She has been working as a hostess in Ginza for many years.