Some language codes stand for groups of languages, such as zh. — T AKASUGI Shinji ( talk ) 00:29, 6 December 2011 (UTC) Or there are variants, more than one identifier for one language, older, newer, redundant, some with a limited usage.
ta: 1772, "natural infantile sound of gratitude" [Weekley]. Although possibly originating from the imitative of baby talk, this is in widespread use in the North of England and Wales as an informal "thanks" amongst adults. American Heritage Dictionary of the English Language says: ta: Chiefly British Used to express thanks. ETYMOLOGY: