There are several collective nouns for pigs, such as "drift," "drove" or "team." The use of a particular collective noun often depends on the type of pigs being discussed.
According to the Northern Prairie Wildlife Research Center, the term "litter" is used when referring to a group of young pigs. When referring to swine, the appropriate collective noun is "sounder." When discussing hogs, the term "passel" is correct. A group of boars is referred to as a "singular." When discussing a less specific type of pig, the collective nouns "herd," "flock" and "hoggery" are all appropriate terms, according to Dictionary.com.