Another reflection on rules as setting; if we assume that the Savage Worlds rules are a completely accurate reflection of the campaign setting, what can we infer about that setting?
This time, languages and monster groups. In both cases, I start from the Deluxe Edition rulebook. Setting aside creatures with animal intelligence, we have the following talkative monster types: Dragon, four flavours of elementals, ghost, goblin, lich, mech, minotaur, ogre, orc, orc chieftain, skeleton, troll, vampires young and ancient, werewolf, zombie. There are also racial templates for PCs and NPCs, which arguably could have one or more languages apiece: Androids, atlanteans, avions, dwarves, elves, half-elves, half-folk, half-orcs, humans, rakashans, and saurians.
Only two groups of monsters are identified in the rulebook; liches work with skeletons and zombies, while orcs are led by orc chieftains and often have pet ogres and dire wolves. It’s ambiguous whether goblins are part of the orc clade or not.
There’s no evidence in the rulebook that other types of monsters work together.
Ghosts, liches, mechs, skeletons, vampires, werewolves, zombies and androids were either once a member of another race or made by that race, so presumably use its language.
The language list thus has at least a dozen tongues: Atlantean, Avion, Dwarven, Elven, Human ("Common"), Rakashan, Saurian, Draconic, one or more flavours of Elemental, Minotaur, Orc ("Black Speech"), and Troll.
Half-elves and half-orcs presumably speak the languages of both parents. Orcs and ogres probably speak something similar – different dialects perhaps. Personally, I’d go with the Tolkienian view that half-folk speak human; YMMV.