accord / concord usage

What difference of sense would you hear in the following between "accord" and "concord":

"…all of whom remain within the enviable sphere of domestic accord/concord."

The OED is inconclusive, if not tautological, the first entry under "concord, n." making use of "accord:"

"1. Agreement between persons; concurrence in feeling and opinion; harmony, accord."

Solution 1:

In some ways, the two words mean the same thing in your example. It tells me that people are in agreement and everyone is "playing according to the rules".

However, concord means more than just agreement — it's a harmonious agreement. People aren't just following the rules, they're getting along with each other in a pleasant way.