What's the difference between aforethought & forethought?

Aforethought is an adjective. It means planned in advance: a malice aforethought. Forethought is a noun, and is the actual process of planning beforehand.

Malice And Forethought

Lust is thoroughly bodily - you wish to have to have sex with this man or woman, grope this man or woman. All body stuff. Love is emotional - yes, there are facets of lust in love however for essentially the most phase it's looking to be with that man or woman, talk with that individual, cuddle, and to stick with them forever. Tl;dr Lust leaves while you gain a number of kilos, love stays and asks if you need cake.

The first is the adjectival form of the noun.

eg Malice Aforethought.

"malice OF forethought" always sounded right to me and still does! The other way seems bizarre to me but I suppose if that is the term used by lawmakers ions ago then that is going to be held to as right. Sorry but it is wierd and better with the "of forethought" IMHO