compass has 13 distinct synonyms spread across 4 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.
navigational instrument for finding directions
an area in which something acts or operates or has power or control: "the range of a supersonic jet"
“a piano has a greater range than the human voice”
drafting instrument used for drawing circles
bring about; accomplish
“This writer attempts more than his talents can compass”
travel around, either by plane or ship
“We compassed the earth”
Synonyms, antonyms and the broader and narrower relations for compass come from Princeton University’s WordNet. Full sources and licences.