turning has 1 distinct synonym spread across 2 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.
act of changing in practice or custom
“the law took many turnings over the years”
a shaving created when something is produced by turning it on a lathe
the end-product created by shaping something on a lathe
the activity of shaping something on a lathe
Synonyms, antonyms and the broader and narrower relations for turning come from Princeton University’s WordNet. Full sources and licences.