The name 'Ketagalan' is used by
Ethnologue and
Glottolog for the Luilang language. However, that name is ambiguous, originally referring to all of plains tribes of northern Taiwan. There has been argument in the literature as to whether it is better applied to Luilang, to the south and west of Taipei, or to Basay, to the east. 'Luilang' is an ancestral village name, and so unambiguous for the language southwest of Taipei, whereas 'Basay' is the endonym of the language to the east, and also unambiguous. ==Numerals==