Congruous

Definitions: (1) corresponding to what is right, proper, or reasonable; suitable; (2) conforming to the circumstances or requirements of a situation; fitting; (3) agreeing in nature or qualities; harmonious

Derivation: Latin, “to come together”

Synonym: commingle, to forge a bond

Quotes:
• Coming together is a beginning; keeping together is progress; working together is success. — Edward Everett Hale (1822–1909) American author
• A dream you dream alone is only a dream. A dream you dream together is reality. — Yoko Ono (1933-) Japanese-American multimedia artist