Synonyms of convention in English:

convention


See US English definition of convention

See UK English definition of convention

See Spanish definition of convención

noun

1‘social conventions’

SYNONYMS
custom, usage, practice, tradition, way, habit, norm
rule, code, canon, punctilio
accepted behaviour, conventionality, propriety, etiquette, protocol, formality, ceremonial
formal praxis
mores
moeurs

2‘a convention signed by the six states bordering on the Black Sea’

SYNONYMS
agreement, accord, protocol, compact, pact
treaty, concordat, entente
understanding, arrangement
contract, bargain, deal

3‘the annual convention of the Institute of Directors’

SYNONYMS
conference, meeting, congress, assembly, gathering, summit, council of delegates, council of representatives, symposium, forum, convocation, synod, conclave, diet, chapter
informal con, get-together
rare colloquium