The 1995 novella collection Four Ways to Forgiveness
The Wikipedia article for Four Ways to Forgiveness claims
This 'Werel' is not the same as the world called Werel in Le Guin's Planet of Exile and City of Illusions.
but there isn't any citation or explanation why.
Both novels are set in the "Hainish Cycle" universe and both involve liberation from slavery. In PoEx and CoI the Werelese are liberators but in FWtF they are the enslavers.
Is there any statement from LeGuin herself about any relation (or lack thereof) between the Werels in the two story sets, or is it inferred only from the text?