I'm confused! What's the difference between metaphor and allegory, somebody help me understand?

[Jabberwocky]

Dna?

 

[Cheshire_Kat]

They are both literary devices, however Metaphores are generally short pieces that compare two or more things that are seemingly different while Allegories are longer, more complex pieces that prove a point.

 

[Jabberwocky]

Zombie maggot mafia

 

[Cheshire_Kat]

If you say so, LOL

 

[Jabberwocky]

Tell me when its over

 

[Jabberwocky]

'Hoist by'myon petaird

Any old sunday will do