As nouns the difference between wanka and waka
is that wanka is {{cx|lang=en|British English}} eye dialect of lang=en while waka is a kind of classical Japanese poem.
waka
English
Etymology 1
From (etyl) , from (etyl) (''ka "song").
Noun
(en-noun)
(poetry) A kind of classical Japanese poem.
Etymology 2
From (etyl).