convening vs convention

convening and convention both are nouns.

Word	Noun	Adjective	Verb	Adverb
convening	Yes	No	No	No
convention	Yes	No	No	No

As nouns, convening and convention are synonyms defined as:

convening (noun)	convention (noun)
the act of convening	the act of convening
	orthodoxy as a consequence of being conventional
	something regarded as a normative example
	(diplomacy) an international agreement
	a large formal assembly