1ac·cord 
/əˈkoɚd/ noun
plural ac·cords /əˈkoɚd/ noun 1 [count] : a formal or official agreement
▪ The two sides were able to reach an accord. ▪ a peace accord 2 [noncount] : a situation or state in which people or things agree
▪ His ideas and mine were completely/fully in accord. = His ideas were completely/fully in accord with mine. [=his ideas and mine agreed completely] ▪ They dressed up for the festival in accord with [=in accordance with] the custom.
▪ The two sides were able to reach an accord. ▪ a peace accord
▪ His ideas and mine were completely/fully in accord. = His ideas were completely/fully in accord with mine. [=his ideas and mine agreed completely] ▪ They dressed up for the festival in accord with [=in accordance with] the custom.
of its own accord
◊If something happens of its own accord, it happens by itself without anyone causing it to happen.
▪ The tree fell of its own accord.
▪ The tree fell of its own accord.
of your own accord
◊If you do something of your own accord, you do it because you want to, not because someone has asked you or forced you to do it.
▪ They left of their own accord.
▪ They left of their own accord.
with one accord
chiefly Brit, formal : all together
▪ They rose with one accord from their seats.
▪ They rose with one accord from their seats.
