What goes in the blank?
Commerce → Commercial
Finance → Financial
Trade → __________
English Language & Usage Stack Exchange is a question and answer site for linguists, etymologists, and serious English language enthusiasts. It only takes a minute to sign up.Sign up to join this community
One word is mercantile:
Related to trade
Trade is also an adjective; ( from TFD)
of or relating to trade or commerce.
(Commerce) intended for or available only to people in industry or business: trade prices.