Professor Pig wrote
I'll give it a go, though, I admit I don't envision pigs and boar as the same at all ^^
THis is from http://www.livescience.com/50623-pigs-facts.html
Pigs are mammals with stocky bodies, flat snouts, small eyes and large ears. They are highly intelligent, social animals, and are found all over the world.
Pigs are in the Suidae family, which includes eight genera and 16 species. Among those species are wild boars, warthogs and pygmy hogs and domestic pigs.
Pig, hog, and boar essentially describe the same animal, but there are some distinctions. A boar is an uncastrated male domestic pig, but it also means a wild pig of any gender. A hog often means a domestic pig that weighs more than 120 lbs. (54 kilograms). Pigs are also called swine.
A boar is to a pig as a stallion is to a gelding.