West Asia is a region, not a continent. It's the southwestern portion of Asia — sometimes called the Middle East (though definitions vary).
Levant: Cyprus, Israel, Palestine, Jordan, Lebanon, Syria
Arabian Peninsula: Saudi Arabia, Yemen, Oman, UAE, Qatar, Bahrain, Kuwait
Anatolia/Caucasus: Turkey, Georgia, Armenia, Azerbaijan
Persian Plateau: Iran
Mesopotamia: Iraq
"Middle East" is Eurocentric (from British imperial view: "Near East" = Ottoman Balkans, "Middle East" = Persia-Afghanistan, "Far East" = China-Japan). "West Asia" is geographic, neutral, preferred in UN/academic contexts. Overlaps 90% but excludes Egypt (North Africa) and sometimes includes Central Asia.
• Population: ~300M
• Area: ~7M km²
• Languages: Arabic, Persian, Turkish, Hebrew, Kurdish, Armenian, Georgian, Azeri + minorities
• Religions: Islam (Sunni/Shia), Christianity, Judaism, Yazidi, Zoroastrian, Baha'i
• Economies: Oil/gas giants (GCC) → diversifying; Israel (tech); Turkey (manufacturing); conflict-affected (Syria, Yemen, Iraq)