different between gunshot vs gunfire

English

gun +? shot

gunshot (plural gunshots)

The act of discharging a firearm.
The sound made by a discharging firearm.
The distance to which shot can be thrown from a gun; the reach or range of a gun.
- The Hind and the Panther, John Dryden
  For those, who are come over to the royal party, are consequently supposed to be out of gunshot.
A bullet, projectile, or other shot fired from a gun.

From gun +? fire.

gunfire (usually uncountable, plural gunfires)

Shots from a gun or guns, typically creating loud report.
Let's hide in the trees to avoid the gunfire.
Sergeant, direct your gunfire toward that copse of trees.
(chiefly military) The use of gunpowder-type weapons, mainly cannon, as opposed to swords or bayonets.
Killing people became much easier and faster once armies started using gunfire.
(military) The time of firing of the morning gun or the evening gun.
(army slang) Tea, a cup of tea, especially one served early in the morning before first parade.
- 1937, David Jones, In Parenthesis, I:
  They had only in them the rolled mattresses, the neatly piled bed-boards and the empty tea-buckets of the orderly-men, empied of their last gun-fire.

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