As nouns the difference between prole and proleg
is that prole is (informal) a member of the proletariat while proleg is prologue.
prole
English
Noun
(
en noun)
(informal) A member of the proletariat
(informal) A pleb (ordinary person).
proleg
English
Noun
(
en noun)
(entomology) An appendage of the abdomen of some insect larvae, such as caterpillars, which is used like a leg.