Hogs are known by a variety of synonyms that convey the same meaning. Pigs, swine, boars, and hogs are all interchangeable words used to describe the domesticated farm animals. Pigs are often associated with their smelly nature and the infamous expression "sweating like a pig" despite the fact that pigs do not sweat. Swine are used to refer to all domesticated pigs regardless of gender or age. Boars are male pigs that are not castrated. Finally, hogs are mature pigs that are raised specifically for human consumption. These synonyms prove that despite their negative connotations, pigs and hogs are important farm animals that provide pork and its by-products.