As nouns the difference between bilker and milker
is that bilker is a cheat, especially one who evades payment while milker is a dairy cow.
bilker
English
Noun
(
en noun)
A cheat, especially one who evades payment
milker
English
Noun
(
en noun)
a dairy cow
a person who, or a machine which, milks
a conservative poker player who only raises the stakes on a good hand