Are open marriages a kind of polyamoury?

Firstly, what is an open marriage? Well, it is not cheating. Open marriage is a marriage in which one or both of the members involved have other sexual relationships, romantic relationships, or both, with the open agreement of all parties.

What is polyamory?

Polyamory can be defined in many different ways, but some of the common elements in polyamorous relationships include: love, intimacy, commitment, honesty, communication, vulnerability all in the context of non-exclusivity.