history has 3 distinct synonyms spread across 1 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.
the aggregate of past events
“a critical time in the school's history”
Synonyms, antonyms and the broader and narrower relations for history come from Princeton University’s WordNet. Full sources and licences.
the discipline that records and interprets past events involving human beings
“he teaches Medieval history”
the continuum of events occurring in succession leading from the past to the present and even into the future
“all of human history”
all that is remembered of the past as preserved in writing; a body of knowledge
“the dawn of recorded history”