How can we differentiate between drones

We can also classify multirotor drones by their body structure. They can be known by the number of propellers used on them. Some drones have three propellers. They are called tricopters. If there are four propellers or rotors, they are called quadcopters. There are hexacopters and octacopters with six and eight propellers, respectively.

The gliding drones or fixed wings do not have a structure like copters. They look like the airplane. The shapes and sizes of the drones vary from purpose to purpose. If you need a spy drone, you will not make a big octacopter right? If you need to deliver a cargo to your friend's house, you can use a multirotor or a single rotor:

• The Ready to Fly (RTF) drones do not require any assembly of the parts after buying. You can fly them just after buying them. RTF drones are great for the beginners. They require no complex setup or programming knowledge.
• The Bind N Fly (BNF) drones do not come with a transmitter. This means, if you have bought a transmitter for your other drone, you can bind it with this type of drone and fly. The problem is that an old model of transmitter might not work with them and the BNF drones are for experienced flyers who have already flown drones with safety, and had the transmitter to test with other drones.
• The Almost Ready to Fly (ARF) drones come with everything needed to fly, but a few parts might be missing that might keep it from flying properly. Just kidding! They come with all the parts, but you have to assemble them together before flying. You might lose one or two things while assembling. So be careful if you buy ARF drones. I always lose screws or spare small parts of the drones while I assemble. From the name of these types of drones, you can imagine why they are called by this name. The ARF drones require a lot of patience to assemble and bind to fly. Just be calm while assembling. Don't throw away the user manuals like me. You might end up with either pocket screws or lack of screws or parts.