WordNet records no synonym and no antonym for finance. It is the only member of each of its synsets, which is common for technical, taxonomic and single-sense vocabulary — there is no other English word that means the same thing. The broader and narrower terms below are the useful relations in that case.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
the commercial activity of providing funds and capital
Synonyms, antonyms and the broader and narrower relations for finance come from Princeton University’s WordNet. Full sources and licences.
the branch of economics that studies the management of money and other assets
the management of money and credit and banking and investments