Modeling contact info in address book

I am looking into the best ways to model contacts that a user has in an address book.

I see contact is a rarified relationship between two entities.
Therefore, I am trying to avoid capturing contact as a person or a business directly even though it may share many common properties.

I see the ContactPoint schema but that is more about contact information for a particular entity.

Any recommendation is appreciated.

Thanks.

Maggie

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