Frederick Starr,
Aztec place-names
“ When two nouns only are compounded into a place-name, the first loses its final letters or last syllable, while the second remains entire. The first is a qualifier of the second and follows it in translation, e. g.—Tecalli from tetl, calli = “house (calli) of stone (tetl) .” 8. In place-names compounded of an adjective and a noun, the adjective precedes, e. g.—Iztacuauhtli from iztac, cuauhtli = “the white (iztac) eagle (cuauhtli) .” ”
