Disunites vs Disunities - What's the difference?

As a verb disunites

is (disunite).

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(disunite)

To cause disagreement or alienation among or within.

* 1516 , , Utopia , "Of Their Military Discipline":

If they cannot disunite them by domestic broils, then they engage their neighbours against them.

* 1863 , , Hard Cash , ch. 44:

Secrets disunite a family.

To separate, sever, or split.

* 1899 , , Jennie Baxter, Journalist , ch. 16:

I have discovered how to disunite that force and that particle.

To disintegrate; to come apart.

* 1843 , , A Blot In The 'Scutcheon , Act I:

You cannot bind me more to you, my lord.

Farewell till we renew... I trust, renew

A converse ne'er to disunite again.

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