We don't have synonyms for kechua yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are kehua.
(n) :
Archaic spelling of Quechua. [A member of one of several South American ethnic groups that spans Peru, Bolivia, northwestern Argentina, northern Chile, and in Ecuador and southern Colombia.]
(n) :
Archaic spelling of Quechua. [A member of one of several South American ethnic groups that spans Peru, Bolivia, northwestern Argentina, northern Chile, and in Ecuador and southern Colombia.]