literally nothing.

No difference whatsoever

One bans intermarrying to preserve certain genetics, the other bans homosexuality to preserve morals.

Nothing. These bans should be put into place everywhere to preserve God's image.

Interracial marriage is a marriage between two different races,homosexual marriage,well I bet you know what it is,don't know why some people are against interracial marriage though

Race mixing is sin, homosexuality is sin, didn't you know this OP? Just ask any friendly neighborhood Republican, they'll explain it all.

Interracial Marriage Bans are put in place to prevent people of different races from marrying. Gay Marriage Bans are put in place to prevent people of the same sex from marrying. The primary difference is that sex and race are not the same thing, and hence the application of one law would likely only be applicable to one group, with the exception of Interracial Gay Marriages. Such marriages would likely be considered "right out" by those putting the law in place, and therefore mentioning them would seem to be stating the obvious. The reasoning behind both bans is also highly divergent, as Interracial Marriage Bans may be enacted for the same reasoning (depending on how the group in power views a given race) that Bestiality isn't allowed, or, in more modern times, it may be enacted for the sake of preserving genetic heritage. Since Gay Marriages aren't likely to result in offspring possessing the genetics of both parents, such concerns as those applicable to Interracial Marriage aren't, in fact, applicable here. These bans are much more likely to be justified by the fact that such marriages challenge the dissenter's view of what marriage is, as well as immorality that some may see as being inherent to the union.

Well, there's a lot of dipshit reasoning behind both of them.

[spoiler]Both are wrong, both should not be allowed to exist, people need to get over this. Why the living -blam!- does it matter if two gays want to get married? Does it affect your life? You don't have to like it, but that doesn't give you the right to stamp on the lives of other people.[/spoiler]