1. the quality or state of being coordinate; the condition of being equal in rank, importance, or function.
Usage: formal; often used in technical or academic contexts
2. the quality of being well-coordinated; harmonious or effective organization or functioning of parts.
Usage: less common than the first sense

Examples

• The coordinateness of the two branches of government ensures a balance of power.
• The project's success depended on the coordinateness of all team members working toward the same goal.
• In grammar, coordinateness refers to the relationship between words or clauses of equal grammatical rank.
• The coordinateness of the dancers' movements created a beautiful visual effect.
• The treaty established the coordinateness of the allied nations in their defense efforts.