Sam and the Ring

[akhtene]

It's not said definitely that the Ring gave understanding of tongues, only 'perhaps'. But it sharpened some senses for sure.

And now don't go telling me that Shagrat and Snaga used the Common Speech because it makes no sence - they were from the same breed .

But they were not. Shagrat was an Uruk, and Snaga - some lesser orc, hence the (nick)name: Snaga = slave. Besides, Westron was widely used by orcs in the form of their jargon, while Black speech was mostly the language of the Dark Tower.