cement has 1 distinct synonym spread across 1 of its 8 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.
concrete pavement is sometimes referred to as cement
“they stood on the grey cement beside the pool”
a building material that is a powder made of a mixture of calcined limestone and clay; used with water and sand or gravel to make concrete and mortar
something that hardens to act as adhesive material
any of various materials used by dentists to fill cavities in teeth
a specialized bony substance covering the root of a tooth
Synonyms, antonyms and the broader and narrower relations for cement come from Princeton University’s WordNet. Full sources and licences.