Difference between External and Outside

External

Part of speech: adjective

Definition: outside of something

Example sentence: When most people set out to change their lives, they often focus on all the external stuff, like a new job or a new location or new friends or a new romantic prospects and on and on. The reality is that changing your life starts with changing the way you see everything in your life.

Outside

Part of speech: noun

Definition: The part of something that faces out; the outer surfaceThe external appearance of somethingThe space beyond some limit or boundary

Part of speech: adjective

Definition: External.A pitch that is away from the batter as it crosses home plate.

Part of speech: adverb

Definition: On, or towards the outsideOutdoors

Part of speech: preposition

Definition: On the outside of

Example sentence: All fixed set patterns are incapable of adaptability or pliability. The truth is outside of all fixed patterns.