Okay, kiddo, in Star Trek, there are a lot of different types of weapons that people use. Some of the most common ones are phasers and photon torpedoes.
Phasers are kind of like lasers, but they work differently. When you shoot a phaser, it emits a beam of energy that can be set to different levels, from a low stun setting to a high kill setting. The people using phasers have to be careful, though, because if they set the phaser to kill, it could be really dangerous.
Photon torpedoes, on the other hand, are like big missiles that are loaded onto spaceships. When they're fired, they explode with a lot of energy and can do a lot of damage. They're often used in outer space battles between spaceships.
There are also different types of weapons that are specific to certain races or species. For example, the Klingons use something called a bat'leth, which is kind of like a sword with curved edges. And the Borg have these cool arm cannons that can shoot out energy blasts.
Overall, weapons in Star Trek are used in ways to protect people, defend against dangerous enemies and keep peace in the universe.