What is the difference between permanent residency and citizenship in Australia?

 The permanent residents in Australia & the citizenship have a mighty difference between both: A citizen has an automatic right to enter in to Australia, and if a permanent resident travels out of Australia, they need to ensure about the permanent visa with a valid travel authority if they wish to return to Australia as a permanent resident. A citizen can vote in Australian Government elections and in most cases permanent residents cannot, however if a permanent resident was enrolled to vote (as a British subject) prior to 1984, they may remain eligible to vote.