embrace has 11 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.
the act of clasping another person in the arms (as in greeting or affection)
the state of taking in or encircling
“an island in the embrace of the sea”
include in scope; include as part of something broader; have as one's sphere or territory
“This group encompasses a wide range of people from different backgrounds”
Synonyms, antonyms and the broader and narrower relations for embrace come from Princeton University’s WordNet. Full sources and licences.