Difference between Tail End and Backside

TAIL END vs BACKSIDE: NOUN

The fleshy part of the human body that you sit on
The time of the last part of something
The hindmost part.
The very end; the conclusion.
The hind part or end of an animal, opposite the head; the tail: as, the tail-end of a worm.
The tip of the tail; the tag: as, the tail-end of the fox is white.
The end, finish, or termination; the fag-end; tailings: as, the tail-end of an entertainment, of a procession, or of a storm.
Plural Inferior corn separated from grain of a superior quality. Compare tailing, 3.
The rear end of anything; of a person or animal, the butt, buttocks; hindquarters, rump.
Any projection that resembles the tail of an animal
The last part of a period of time, event, or situation; the concluding or final part.

The side of an object that is opposite its front
The fleshy part of the human body that you sit on
The buttocks; the rump.
The back part or aspect of anything; the part opposite to the front, or behind that which is presented to a spectator.
Specifically The hind part of an animal; the rump: often (vulgarly) in the plural.
The back premises, back yard, or out-buildings attached to a dwelling; also, the privy.
The hinder part, posteriors, or rump of a person or animal.
The side of something that is opposite the front.
The buttocks.

Buttocks, Tush, Posterior, Keister, Derriere, Bum, Ass, Butt, Hindquarters, Fanny, Bottom, Rump, Backside, Rear, Tail

Arse, Prat, Rump, Tail, Rear, Posterior, Keister, Buttocks, Bum, Tush, Ass, Derriere, Hindquarters, Fanny, Butt

Buttocks, Tush, Posterior, Keister, Derriere, Bum, Ass, Butt, Hindquarters, Fanny, Bottom, Rump, Backside, Rear, Tail

Arse, Prat, Rump, Tail, Rear, Posterior, Keister, Buttocks, Bum, Tush, Ass, Derriere, Hindquarters, Fanny, Butt

At the tail end of that same breath he started laughing.
Rock at the tail end of our float trip today.
Watch the end of advertisements and you will frequently see the tail end of the network advertisement after the Comcast targeted ad ends.
It was the tail end of a long weekend.
Look closely at the tail end of this definition.
Roll the cut paper into a snake shape so that the head end is a little wider than the tail end.
A sword scabbard drag (end cap) And of interest the tail end of a trigger guard from a Maynard carbine.
If perfview is running for a long time, does it end up capturing just the tail end of the period it was active?
How do we start dealing with the tail end when the problem is actually at the front end?.
And this came at the very end, the tail end of pilot season.