Ork Language
This is partly an old discussion, however, it would be interesting to look into. One thing that always bugged me about the Orks was that they were portrayed as if they spoke like English hooligans rather than an alien race. Other have theorized that they use some sort of psychic power or potential to communicate. Personally I don't really agree with that statement, I find it to be a bit far fetched. Some of the Black Library works however presented us with a perspective that Orks communicated through crude sounding growls and roars, something that would sound rather animalistic.
Of course the novels tend to be taken from an Imperial perspective; same as how the Imperium assumes that Ork technology works simply because they believe due to the Imperium's inability to believe otherwise, Ork language is more complicated than it seems. If one were to write down the Ork language, it would be rather simplistic, based on the 56 word roots published in the very old "Waaargh Da Orks - Rogue Trader" (Stillman and Ansell, 1990: p95). I would like to add that there are probably more word roots out there. However, this would seem rather crude and simplistic, the complicated part comes in the pronunciation. This might mean that for example "Daka" (Attack, noisy weapon, shoot, fight) could have all those different definitions, but each different one being pronounced slightly different. Most would translate these words rather crudely, but they could also be done more sophisticated as for example Durzgor Wazmor (translated as: The Boss Who Slaughters Cities In Wild Ecstasy).
Food for thought