stockade has 1 distinct synonym spread across 1 of its 3 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.
fortification consisting of a fence made of a line of stout posts set firmly for defense
a penal camp where political prisoners or prisoners of war are confined (usually under harsh conditions)
Synonyms, antonyms and the broader and narrower relations for stockade come from Princeton University’s WordNet. Full sources and licences.
surround with a stockade in order to fortify