The staying together, or remaining in close relation, of non-physical things.
Logical consistency; lack of self-contradiction.
Connection or association; the condition of being related.
The level or degree of affinity between keys, chords and tones.
The links between the x-values and y-values of ordered pairs of numbers especially coordinates.
Kinship; being related by blood or marriage.
A romantic or sexual involvement.
A way in which two or more people behave and are involved with each other