Here's some more for the mix, Uncle Bill!
In certain Tibetan-based languages like Denzong (Sikkimese) and, I think, Dzong-kha (Bhutanese), though I'm not so sure of the latter:
"Ashyang" - maternal uncle
"Aku" - paternal uncle
If they're your mother's or father's elder brother, you add "Gembo" or "Bompu" - both of which means "elder" - after "Ashyang" or "Aku" as the case may be. Thus "Ashyang-Gembo" or "Aku-Bompu". You might also say "Aba-Bompu" for dad's elder brother, "Aba" means father.
It's a bit confusing at first, but once you get the hang of it, then one word, and you know exactly the type of uncle that's being referred to!
- Sonam