Martian means native to Mars. Alien means anyone not native to its current locale.
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well those answers are better than mine, but when I think martian it's a thing on a planet, and an alien flys around in a UFO
no idea! im jst answering this coz im bored! lol
Martian means that the alien is from Mars, while Alien means a living being from a planet other then Mars, or Earth.
Martians can get a green card and aliens can't. Actually there is nothing different between a martian and an alien. But a Martian is more definitive.