The map below highlights Anglican Communion provinces that:
1. promote unbiblical theology associated with same-sex unions and the "normalization" of homosexual behavior (in red)
2. are being pressured by other Anglican provinces to accept this un-biblical theology (in yellow)

What's the difference?
Civil unions are legal contracts between partners that are recognized by a state or government as conferring all or some of the rights of marriage, but without the historical and religious meaning associated with the word "marriage."
Same-sex marriage confers the full legal rights of marriage to a same-sex couple. Ten countries allow same-sex couples to marry nationwide: Argentina, Belgium, Canada, Iceland, the Netherlands, Norway, Portugal, Spain, South Africa, and Sweden. Same-sex marriages are also performed and recognized in Mexico City and parts of the United States.
A same-sex blessing is a religious service to acknowledge and bless the civil union or civil marriage of a same-sex couple. The liturgies range from a traditional Holy Eucharist with special prayers for the couple all the way to reworded services of Holy Matrimony.