concedence /kənˈsiːd(ə)ns/ noun 1) The action of conceding; concession, agreement.
Here's what I describe as false concedence:
Expressing that you concede a less consequential point, but only in an effort to show that you are willing to concede points. Your unspoken belief is that you do not concede that point. However if pressured, you are willing to forfeit that belief in order to maintain the perception had always conceded the point.
Is there a name for this sort of action? Technically a lie if unchallenged. But when challenged, the speaker may decide it's inconsequential and change their actions to make it the truth.