As nouns the difference between powan and pocan
is that powan is species: Coregonus clupeoides, a species of freshwater whitefish endemic to Loch Lomond in Scotland while pocan is the poke, Phytolacca americana (formerly species: Phytolacca decandra).
powan
Noun
(
en noun)
, a species of freshwater whitefish endemic to Loch Lomond in Scotland.
pocan
English
Noun
(-)
(botany) The poke, Phytolacca americana (formerly ).
References
*