“The CIA has since paid more than a million dollars in accordance with the agreement,” the report said. For more details on the two main types of chords, see the subject-verb chord and the pronoun agreement. You`ll learn how to compare topics and verbs, pronouns and precursors, and maybe even a few outfits. You will learn how the agreement also works with collectives and indeterminate pronouns. Concordance is a great thing because it occurs at least once per sentence. Such an agreement currently exists for pandemic influenza, Phelan notes, but not for any other type of disease or vaccine. Concordance usually involves the concordance of the value of a grammatical category between different elements of a sentence (or sometimes between sentences, as in some cases where a pronoun is needed to match its predecessor or speaker).