Nouns

(n)agreement, accordharmony of people's opinions or actions or characters“the two parties were in agreement”
(n)accord, conformity, accordanceconcurrence of opinion“we are in accord with your proposal”
(n)treaty, pact, accorda written agreement between two states or sovereigns
(n)accordsympathetic compatibility

Verbs

(v)harmonize, harmonise, consort, accord, concord, fit in, agreego together“The colors don't harmonize”, “Their ideas concorded”
(v)accord, allot, grantallow to have“grant a privilege”