accounting has 5 distinct synonyms spread across 3 of its 5 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. WordNet records no antonym for it — antonymy is a relation between word forms rather than concepts, so it is deliberately sparse.
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.
a convincing explanation that reveals basic causes
“he was unable to give a clear accounting for his actions”
a system that provides quantitative information about finances
Synonyms, antonyms and the broader and narrower relations for accounting come from Princeton University’s WordNet. Full sources and licences.
the occupation of maintaining and auditing records and preparing financial reports for a business
a bookkeeper's chronological list of related debits and credits of a business; forms part of a ledger of accounts
a statement of recent transactions and the resulting balance
“they send me an accounting every month”