External
Part of speech: adjective
Definition: outside of something
Example sentence: Punk is musical freedom. It's saying, doing and playing what you want. In Webster's terms, 'nirvana' means freedom from pain, suffering and the external world, and that's pretty close to my definition of Punk Rock.
Outer
Part of speech: adjective
Definition: Outside; external.Farther from the centre of the inside.
Part of speech: noun
Definition: An outer part.(wholesale trade) the smallest single unit normally sold to retailers, usually equal to one retail display box.Someone who admits to something publicly.Someone who outs another.
Example sentence: It requires greater courage to preserve inner freedom, to move on in one's inward journey into new realms, than to stand defiantly for outer freedom. It is often easier to play the martyr, as it is to be rash in battle.