The difference between Obscene, Pornography and Indecent

• Obscene :
  
• Designed to incite to indecency or lust; "the dance often becomes flagrantly obscene"-Margaret Mead
• Abhorrent: offensive to the mind; "an abhorrent deed"; "the obscene massacre at Wounded Knee"; "morally repugnant customs"; "repulsive behavior"; "the most repulsive character in recent novels"
• lewd: suggestive of or tending to moral looseness; "lewd whisperings of a dirty old man"; "an indecent gesture"; "obscene telephone calls"; "salacious limericks" 
• Pornography :
• It’s kind of activity (writing or pictures or films etc.) of no literary or artistic value other than to stimulate sexual desire.
• Indecent :
• Not in keeping with accepted standards of what is right or proper in polite society; "was buried with indecent haste"; "indecorous behavior ...
• Offensive to good taste especially in sexual matters; "an earthy but not indecent story"; "an indecent gesture"
• Offending against sexual mores in conduct or appearance; "a bathing suit considered indecent by local standards"