Law has always been a distinction between words. The English language is replete with words that sound the same, are spelled the same, but woe for you if English is not your native language.
So is civil union truly the same as marriage? If it is, why is NJ having such an issue and giving the lawmakers six months to find the proper words?
A civil union is a legal partnership agreement between two persons. They are typically created for same-sex couples with the purpose of granting them some benefits that are found in marriage. Civil unions were made to try to appease same sex couples. They are given very limited advantages compared to married couples. The amount of advantages vary within the state but their rights aren’t nearly equivalent to married couples. Some jurisdictions, however, also allow entry by opposite-sex couples. Unions that are similar to or synonymous with civil unions include civil partnerships, registered partnerships , and domestic partnerships. Some jurisdictions, such as the United Kingdom, have unions that on the paper are similar to marriage, while some only allow minimal reciprocal benefits. Many people are critical of civil unions because they say it creates a separate status that’s unequal to marriage. Others are critical because they say it is introducing same-sex marriage by using a different name.
A marriage is a relationship between or among individuals, usually recognized by civil authority and/or bound by the religious beliefs of the participants. The fact that marriage often has the dual nature of a binding legal contract plus a moral promise can make it difficult to characterize.
A married couple can be called each other’s spouses, and spousal is used as a legal term for the marital relation. A royal married couple are consorts.
In one form or another, marriage is found in virtually every society. The very oldest records that refer to it speak of it as an established custom. Despite attempts by anthropologists to trace its origin (and test the hypothesis of primitive promiscuity), evidence is lacking.
In Western societies, marriage has traditionally been understood as a monogamous union, while in other parts of the world polygamy has been a common form of marriage. Usually this has taken the form of polygyny (a man having several wives) but a very few societies have permitted polyandry (a woman having several husbands). 
The question remains: separate but equal? And is there equality if there is a separate “class”?