Congruity (noun)

1. Agreement or compatibility, especially between ideas or feelings.
2. The quality of being in harmony or accord with something else.

Origin:

Late 16th century: from latin congruus, from con- "together" + gratus "pleasing".

Examples:

1. The congruity between the plans and the available resources was essential for the success of the project.
2. There was a remarkable congruity between the findings of the two separate studies.
3. The congruity of their goals and values was one of the key factors in the success of their relationship.
4. The congruity of the color scheme and the furniture created a cohesive and harmonious look in the room.
5. The congruity of the components was crucial to ensuring the proper functioning of the machine.