incarnation has 3 distinct synonyms spread across 2 of its 4 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 new personification of a familiar idea
“the embodiment of hope”
(Christianity) the Christian doctrine of the union of God and man in the person of Jesus Christ
time passed in a particular bodily form
“he believes that his life will be better in his next incarnation”
the act of attributing human characteristics to abstract ideas etc.
Synonyms, antonyms and the broader and narrower relations for incarnation come from Princeton University’s WordNet. Full sources and licences.