Translation guide
The country Australia. In Japanese, it is most commonly referred to as オーストラリア, but the kanji form 豪州 is also used in formal or abbreviated contexts.
Referring to the country Australia in general contexts.
The standard katakana name for Australia, used in most everyday and formal situations.
Have you ever been to Australia?
Australia is in the Southern Hemisphere.
Kanji abbreviation for Australia, often used in news headlines, formal documents, or as a shorthand. The character 豪 is the first character of the ateji 濠太剌利, an old phonetic rendering.
The Australian government announced a new policy.
Ateji (kanji used phonetically) for Australia, now extremely rare and mostly of historical interest. Not used in modern Japanese.
濠太剌利 is an old notation.