Language questions (Greek, Turkish, etc.)

Isn't the "zan" in "Ayazana" Persian?

I'd agree, but keep in mind that no-one really uses these terms to describe a relationship. In everyday life, they're used mostly as jokes...

Anatolian Turks can easily understand Azeri (very easily, almost the same languages even if both communities have never lived under the same state nearly thousand of years), Crimean Tatars (easy), Gagauz of Moldova (easy). The most difficult to understand is Kazak's one. We can hardly understand Turkmens of Turkmenistan since their prounanciation is strange to us. Uzbek's one is almost the same as Turkmen's to us.

Yes, as Alparslan said. But when the texts are written, we can easily realize what it says, no matter it is in Turkmen or Uzbek. The pronounciations are different tough, theirs are way harder than ours, but writing makes understanding easier.

Uighur is very similar to Uzbek and Turkmen. The most different one is Kazakh for us, since it has been kind of isolated than other Turks. And also, Oguz and Uygur are more related, and Kazakh and Kyrgiz are another subgroup. Originally, Turkmen, Azeri and Anatolian Turkish were very close, since all of them belonged to the Oguz group, western Turks, western dialects.

That's wrong Seljuk. Kay�nbirader is an originally Persian word for the brother of your wife, not your wife's sister's husband. Kay�n�o is the same.

Bacanak is the exact word.