Projectile motion means that any object projected by any means that continues in motion.
World's Longest Basketball Shot | 3rd DECK VIEW | Dude Perfect
When the guy is throwing the ball, the ball is still in motion so it is a projectile motion.
When the cannonball shoots the guy out, it is projectile motion because the guy is still in motion.
When the guy falls off of his bike he is in motion so he is a projectile.
When the yellow bird gets flung from the sling-shot he is a projectile because he is in motion.
The curved path of a projectile is the result of constant motion horizontally and accelerated motion vertically under the influence of gravity.