The difference between Plurality and Unity

Plurality as a noun (uncountable):

The state of being plural.

Plurality as a noun (ecclesiastical):

The holding of multiple benefices.

Plurality as a noun (countable):

A state of being numerous.

Plurality as a noun (countable):

A number or part of a whole which is greater than any other number or part, but not necessarily a majority.

Plurality as a noun (countable):

A number of votes for a single candidate or position which is greater than the number of votes gained by any other single candidate or position voted for, but which is less than a majority of valid votes cast.

Plurality as a noun (countable):

A margin by which a number exceeds another number, especially of votes.

Plurality as a noun (countable):

A group of many entities: a large number.

Plurality as a noun (countable):

A group composed of more than one entity.

Plurality as a noun (of spouses):

Polygamy.

Unity as a noun (uncountable):

Oneness; the state or fact of being one undivided entity.

Unity as a noun:

A single undivided thing, seen as complete in itself.

Unity as a noun (drama):

Any of the three classical rules of drama: unity of action (nothing should be admitted not directly relevant to the development of the plot), unity of place (the scenes should be set in the same place), and unity of time (all the events should be such as might happen within a single day).

Unity as a noun (mathematics):

The number 1 or any element of a set or field that behaves under a given operation as the number 1 behaves under multiplication.

Unity as a noun (legal):

The peculiar characteristics of an estate held by several in joint tenancy.

Unity as a noun (Quakerism):

The form of consensus in a Quaker meeting for business which signals that a decision has been reached. In order to achieve unity, everyone who does not agree with the decision must explicitly stand aside, possibly being recorded in the minutes as doing so.