Azerbaijani as a name for Azeri is incorrect. Azerbaijan and Iranian Azerbainan is a place and Azeri is a people. Azeri are the Oghuz Turkmen who converted to Islam with Seljuk. Azeri was the language of the Seljuk Confederation. To call Azeri Azerbaijani is like calling English Englandish. Languages take their name from the people not from the country.