paste has 3 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.
any mixture of a soft and malleable consistency
a hard, brilliant lead glass that is used in making artificial jewelry
an adhesive made from water and flour or starch; used on paper and paperboard
Synonyms, antonyms and the broader and narrower relations for paste come from Princeton University’s WordNet. Full sources and licences.
a tasty mixture to be spread on bread or crackers or used in preparing other dishes