WordNet records no synonym and no antonym for beeswax. It is the only member of each of its synsets, which is common for technical, taxonomic and single-sense vocabulary — there is no other English word that means the same thing. The broader and narrower terms below are the useful relations in that case.
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 yellow to brown wax secreted by honeybees to build honeycombs
cover with beeswax
“Chris beeswaxed the kitchen table”
Synonyms, antonyms and the broader and narrower relations for beeswax come from Princeton University’s WordNet. Full sources and licences.