convention vs accord

convention and accord both are nouns.

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

As nouns, accord is a hypernym of convention; that is, accord is a word with a broader meaning than convention:

Other hypernyms of convention include pact, treaty.

convention (noun)	accord (noun)
the act of convening	sympathetic compatibility
orthodoxy as a consequence of being conventional	concurrence of opinion
something regarded as a normative example	a written agreement between two states or sovereigns
(diplomacy) an international agreement	harmony of people's opinions or actions or characters
a large formal assembly

convention (verb)	accord (verb)
	allow to have
	go together