presentation has 5 distinct synonyms spread across 3 of its 7 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 activity of formally presenting something (as a prize or reward)
“she gave the trophy but he made the presentation”
a show or display; the act of presenting something to sight or view
“the presentation of new data”
the act of making something publicly available; presenting news or other information by broadcasting or printing it
“he prepared his presentation carefully in advance”
the act of presenting a proposal
a visual representation of something
formally making a person known to another or to the public
(obstetrics) position of the fetus in the uterus relative to the birth canal
“Cesarean sections are sometimes the result of abnormal presentations”
Synonyms, antonyms and the broader and narrower relations for presentation come from Princeton University’s WordNet. Full sources and licences.