IntroductionThe range of wireless network technologies is extended to cover general voice and data networks, which allow users to transmit different types of data through wireless connections over long distances, as well as covering optimal infrared light and radio frequency techniques for short-range wireless communications. And with the popularity of laptops, cell phones, handheld computers, PDAs (PDAs), pen-based computers, GPS devices, and in the post-PC era. Smart electronic devices that depend on wireless networking technologies have become cheaper, more distributed, more prevalent in daily life. For example, users can use their cell phone to access their email. As for travelers, it is possible to use laptops and connect to the Internet via base stations installed in airports, train stations and other public places. Even at home, users can connect devices to sync data and transfer files. From this point of view, the emergence of wireless networks such as wireless sensor networks (WSNs) and mobile ad hoc networks (MANETs) can be considered as the latest Moore's Law trend towards smallness and ubiquity of devices computer scientists. An overview of these two types of wireless networks (WSN) and (MANET) and their use will allow us to make a comparison between them.Wireless Sensor Networks (WSN)Wireless Sensor Networks (WSN) is a collection of sensors used in the transmission or follow-up of specific physical or chemical phenomena such as heat, humidity, vibration, light, pressure, etc. and then transfer the information related to this phenomenon wirelessly to the data processing center to take advantage of it without the need for human presence at the location of the phenomenon. Typically, wireless s...... middle of paper ...... wireless technology applications, and it is likely that in the next few years it will spread more lively, as they mainly deal with unknown and untested environments and provide reliable monitoring and analytics for them. Both (MANET) and (WSN) are ad hoc networks, with limited or no mobility in (WSN). And none of them replaces the other. And they have many differences and many similarities. They offer more convenient means of communication, where infrastructure-free networks can change many applications involved in military strategy, environmental monitoring, information transfer and home security. This idea can kick off a wave of wireless communication that the world hasn't seen yet. And independent mobile users will have to act quickly to overcome the fact of decentralized connectivity and infrastructure-less networks.