Definitions

AGREE
Acquiesce: to agree to something, often unwillingly. Agree, concur.
Reluctantly, he finally acquiesced to/in the plan.
She has a very acquiescent nature.

Concord: agreement and peace between nations and people.
Countries living in concord.


DISAGREE
Contravene: to do something that a law or rule does not permit, or to break a law or rule:
This contravenes the Race Relations Act.
By accepting the money, she was in contravention of company regulations.

Demur: (v.; n.) to object; objection; misgiving.
She hated animals, so when the subject of buying a cat came up, she demurred.
She said yes, but he detected a demur in her voice.
She agreed to her request without demur.

Dissent: strong difference of opinion on a particular subject
She dissents form the motion / on how to approach the problem.

Discord: a lack of agreement and shared opinion.
A note of discord has crept between the USA and Europe.

EXALT
Adulation: (n.) high praise, esp. when it is...