promotion has 7 distinct synonyms spread across 3 of its 4 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. Its one recorded opposite is demotion.
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 message issued in behalf of some product or cause or idea or person or institution
“the packaging of new ideas”
act of raising in rank or position
encouragement of the progress or growth or acceptance of something
the advancement of some enterprise
“his experience in marketing resulted in the forwarding of his career”
Synonyms, antonyms and the broader and narrower relations for promotion come from Princeton University’s WordNet. Full sources and licences.