What is notional concord?

Notional concord, also known as notional agreement, is a grammatical concept where the form of a verb or pronoun agrees with the meaning or notion of a subject rather than its grammatical number. For example, in sentences like "The team are winning," the verb "are" reflects the collective nature of the team as individuals rather than as a single entity. This contrasts with traditional grammatical concord, where agreement is based strictly on the grammatical number of the subject. Notional concord is often used in informal speech and writing, particularly in British English.