How's this:

Encoding is changing the way data is presented
  - using a public, generally-understood, and (usually) low-overhead method
  - for the purpose of allowing the data to survive intact and easily recoverable after some sort of transfer.

Encryption is changing the way data is presented
  - using a method or a key that is restricted and (as it happens) often computationally intensive
  - for the purpose of shielding the data from some people while making it available to others.

In short, encoding is for preservation, encryption is for obfuscation.

In reply to Re: Difference between encoding and encryption? by dvergin
in thread Difference between encoding and encryption? by r.joseph

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