score:20
In international law, nationality and citizenship are synonymous. In domestic law, some countries distinguish between citizens and nationals, where all citizens are nationals and most nationals are citizens. I don't think Australia distinguishes between the two. So Australian citizenship is the same as Australian nationality.
Upvote:4
I would parse it as this:
I am an Australian national
He/She is a citizen of Australia.
And want to live in Australia long term
And they are not interested in living outside of Australia