denotes a direct contrast to the original proposition opposition; contrast

Not that I loved Caesar less, but that I loved Rome more.

"Ye have heard that it hath been said... But I say unto you...".

"Serenity now; insanity later."

a substitution of an agreeable or less offensive expression in place of one that may offend or suggest something unpleasant to the listener;

 initialization or mispronunciation for curse words 

ex: SOB, SOL, shoot

a statement or proposition that seems self-contradictory or absurd but in reality expresses a possible truth.

"The swiftest traveler is he that goes afoot."

"War is peace."

"Some day you will be old enough to start reading fairy tales again."

 "Ignorance is strength."

a balance of two or more similar words, phrases, or clauses.

 Not Parallel: Mary likes hiking, swimming, and to ride a bicycle.

Parallel: Mary likes hiking, swimming, and riding a bicycle.

Lacking parallelism: Affy ran across the yard, jumped over the fence, and down the alley he sprinted.

Parallel: Affy ran across the yard, jumped over the fence, and sprinted down the alley.