entry has 15 distinct synonyms spread across 5 of its 6 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.
an item inserted in a written record
the act of beginning something new
“they looked forward to the debut of their new product line”
a written record of a commercial transaction
something (manuscripts or architectural plans and models or estimates or works of art of all genres etc.) submitted for the judgment of others (as in a competition)
“several of his submissions were rejected by publishers”
Synonyms, antonyms and the broader and narrower relations for entry come from Princeton University’s WordNet. Full sources and licences.