The difference between Accord and Concur

When used as verbs, accord means to make to agree or correspond, whereas concur means to unite or agree (in action or opinion).

Accord is also noun with the meaning: agreement or concurrence of opinion, will, or action.

check bellow for the other definitions of Accord and Concur

Accord as a noun:

Agreement or concurrence of opinion, will, or action.
Accord as a noun:

A harmony in sound, pitch and tone; concord.
Accord as a noun:

Agreement or harmony of things in general.

Examples:

"the accord of light and shade in painting"
Accord as a noun (legal):

An agreement between parties in controversy, by which satisfaction for an injury is stipulated, and which, when executed, prevents a lawsuit.

Examples:

"rfquotek Blackstone"
Accord as a noun (international law):

An international agreement.

Examples:

"The Geneva Accord of 1954 ended the French-Indochinese War."
Accord as a noun (obsolete):

Assent
Accord as a noun:

Voluntary or spontaneous impulse to act.

Examples:

"Nobody told me to do it. I did it of my own accord."

Accord as a verb (transitive):

To make to agree or correspond; to suit one thing to another; to adjust.
Accord as a verb (transitive):

To bring (people) to an agreement; to reconcile, settle, adjust or harmonize.
Accord as a verb (intransitive):

To agree or correspond; to be in harmony; to be concordant.
Accord as a verb (intransitive):

To agree in pitch and tone.
Accord as a verb (transitive, legal):

To grant as suitable or proper; to concede or award.
Accord as a verb (intransitive, obsolete):

To give consent.
Accord as a verb (intransitive, archaic):

To arrive at an agreement.

Concur as a verb:

To unite or agree (in action or opinion); to have a common opinion; to coincide; to correspond.
Concur as a verb:

To meet in the same point; to combine or conjoin; to contribute or help towards a common object or effect.
Concur as a verb (obsolete):

To run together; to meet.
Concur as a verb (rare):

To converge.