Convention
Part of speech: noun
Definition: A meeting or gathering. A formal deliberative assembly of mandated delegates The convening of a formal meeting A formal agreement, contract or pact A treaty or supplement to such. A generally accepted principle, method or behaviour.
Example sentence: What's happened is that every time I go to a convention or go into a comic book shop is that people drag me off into a corner and beat me up and go, 'When are you going to do Batman again?'
Convening
Part of speech: verb
Definition: To come together; to meet; to unite.