concord vs accord

concord and accord both are nouns.

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

As nouns, accord is a hyponym of concord; that is, accord is a word with a more specific, narrower meaning than concord:

concord: a harmonious state of things in general and of their properties (as of colors and sounds); congruity of parts with one another and with the whole
accord: harmony of people's opinions or actions or characters

Other hyponyms of concord include peace, comity, agreement.

As verbs, concord and accord are synonyms defined as:

Other synonyms of concord include agree, consort, fit in, harmonise, harmonize.

concord (noun)	accord (noun)
agreement of opinions	sympathetic compatibility
the determination of grammatical inflection on the basis of word relations	concurrence of opinion
a harmonious state of things in general and of their properties (as of colors and sounds); congruity of parts with one another and with the whole	a written agreement between two states or sovereigns
	harmony of people's opinions or actions or characters

concord (verb)	accord (verb)
be in accord; be in agreement	allow to have
arrange the words of a text so as to create a concordance	go together
arrange by concord or agreement
go together