What is another word for civil union?
Pronunciation: [sˈɪvə͡l jˈuːni͡ən] (IPA) 
When someone mentions the term "civil union," they may be referring to a legal partnership between two individuals that grants them some of the same rights and protections as marriage. However, this term is not the only way to describe such a partnership. Other synonyms for civil union might include domestic partnership, civil partnership, or registered partnership. Depending on the country or state in which the partnership is formed, there may be differences in the terminology used to describe it. Nevertheless, all of these terms refer to a similar legal status that allows individuals to share certain legal benefits and protections.
