Wild boar was a game animal similar to a pig.
In 2151, Jonathan Archer, aghast at the Eska hunting the sentient Wraith, felt there was a difference between that and hunting wild boar. (ENT: "Rogue Planet")
Korob created a table consisting of several foods, including a boar's head with an apple in the mouth on a platter of greens. (TOS: "Catspaw")