program has 11 distinct synonyms spread across 10 of its 10 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.
a series of steps to be carried out or goals to be accomplished
“they drew up a six-step plan”
a system of projects or services intended to meet a public need
“he proposed an elaborate program of public works”
a document stating the aims and principles of a political party
“their candidate simply ignored the party platform”
an announcement of the events that will occur as part of a theatrical or sporting event
“you can't tell the players without a program”
an integrated course of academic studies
“he was admitted to a new program at the university”
(computer science) a sequence of instructions that a computer can interpret and execute
“the program required several hundred lines of code”
a performance (or series of performances) at a public presentation
“the program lasted more than two hours”
Synonyms, antonyms and the broader and narrower relations for program come from Princeton University’s WordNet. Full sources and licences.