Yesterday’s xkcd cartoon discussed the terminology “The West” and “The East”, and how it was confusing to an American:

His map isn’t exactly in line with what I’ve inferred the meanings of these terms to be, so I modified his map a bit to reflect my (also confusing) understanding of these terms:

Generally, “The West” and “The Western Hemisphere” have a meaning roughly equivalent to “First-World Nations”, with the exceptions of Japan and (maybe?) South Korea.  Which is to say, something similar to “developed democracies which were aligned with the United States in the Cold War.”  This generally includes Australia and New Zealand, which makes the map pretty nonsensical.  Sometimes “The West” includes Mexico and Central and South America, but I didn’t mark the map this way because that’s not usually how I hear the term used.

Oddly, “The East” does not mean “Not ‘The West.’”  It is more synonymous with “The Far East”, which is to say, “places where Asian people live.”  That includes Japan, China, Taiwan, Korea, and Southeast Asia.  I suppose that if the “Middle East” is really the middle of the east, then “The East” must include all of Asia and Africa.  But I think “Middle East” is a whole other discussion.  You could also debate whether India, Indonesia, and New Guinea belong in “The East.”  I just drew it based on what I’ve inferred.

In either map, I think it is clear that the terms are ambiguous and only loosely correlated to their geographic meaning.