Khalaj, also known as Arghu, is a divergent Turkic language spoken in Iran and Azerbaijan.Ethnologue and ISO list an Iranian language "Khalaj" with the same population, but Glottolog lists it as spurious. The International Encyclopedia of Linguistics, Volume 3 by Williamm J. Frawley lists it as an Iranian language as well, and mentions furthermore that, apart from being spoken in both Iran and Azerbaijan, that it is related to Kurdish and Talysh.