Mixed martial arts equipment (MMA) is an extreme combat sport in which participants are permitted to use not only the fighting techniques of wrestling and boxing but also those of martial arts such as kickboxing, judo, and karate. MMA equipment includes equipment that is used for MMA training and protection.

E-learning refers to the use of electronic technology to access educational curriculum outside of a traditional classroom. It encompasses a wide range of educational activities that are delivered electronically, from interactive online courses to virtual classrooms. E-learning utilizes various digital resources such as multimedia, audio, video, and web-based platforms to facilitate learning. This approach enables learners to access educational content from anywhere, at any time, using internet-connected devices. It offers a flexible and personalized learning experience, allowing individuals to acquire new skills and knowledge at their own pace.

Helicopter tourism is a new dimension of the tourism industry that allows passengers/tourists to reach spots difficult to reach by other means of transport and to enjoy views of tourist destinations from the air.

Over the past few years, there has been an upsurge in the number of golf courses, especially in the top golfing nations, such as the United States, the United Kingdom, Japan, Germany, Canada, South Korea, Sweden, France, and Italy. These countries are some of the most prominent golfing locations worldwide and account for more than 50% of all golf courses worldwide.

The gaming market is defined as a running of gaming applications known as electronic games or video games on game consoles, such as Xbox and PlayStations, personal computers (PCs), or mobile devices. The market includes console gaming, mobile gaming, and PC gaming.

Carbon fibers are fibers composed mostly of carbon atoms and have a diameter of about 3-15 micrometers. The carbon atoms are bonded together in crystals, which are aligned parallel to the long axis of the fiber. This alignment gives the fiber a high strength-to-volume ratio.

An amusement park is a type of entertainment venue that offers a variety of attractions, rides, games, and experiences designed to entertain visitors of all ages. Typically, amusement parks feature a combination of thrill rides, family attractions, themed areas, shows, live entertainment, and dining options within a designated area or complex.

BGM refers to any type of music that is played at low volume in various retail, commercial, and public venues and is mainly intended for passive listening. BGM is not intended to be the primary focus of the target audience and is mainly used for improving the ambiance of the space.