(countable) An understanding between individuals to follow a specific course of conduct, such as an Agreement to commit a crime (a conspiracy).
(uncountable) A state whereby two parties share a view or opinion.
The UK and US negotiators nearing agreement.
(countable) An expression or indication that an Agreement has been reached.
He nodded his agreement
(law, countable) A legally binding contract enforceable in a court of law.
(linguistics, uncountable) Rules that exist in many languages that force some parts of a sentence to be used or inflected differently depending on certain attributes of other parts.
(uncountable) The state of not contradicting one another.
The results of my experiment are in Agreement with those of Michelson and with the law of General Relativity.