As nouns the difference between priggery and piggery
is that priggery is thievery or roguery while piggery is a place, such as a farm, where pigs are kept or raised.
priggery
English
Noun
(priggeries)
(dated) thievery or roguery
priggishness
piggery
English
Noun
(piggeries)
a place, such as a farm, where pigs are kept or raised
piggish behaviour