Can anybody give me more examples on how to use these words? I know for sure than you should not use dominion as domain for the Internet but apart from that sight difference both words seem to be synonyms to me.
and Death shall have no Dominion by Dylan Thomas
UPDATE
to Wordreference as a governed area they have the same meaning? So I guess "The domain of the Roman Empire" or "The dominion of the Roman Empire" are both legal. Am I right?
Best Answer
[An expansion of kolossus' comment]
Both domain and dominion have multiple related meanings.
ODO defines domaine as both
In both cases, it is the subject of control by a ruler, or under the jurisdiction of someone or something.
Dominion is defined by the same source as
While both can refer to the territory over which one has control, dominion also refers to the act or process control itself. As such it seems to have a slightly more active connotation, suggesting strength or even force,not just possession.