As new technologies progressed over the past year, some words used to describe them rose in popularity.Here is a look at some technology terms that gained wide attention during 2021.Major tech companies began talking more about the "metaverse."The term describes a non-physical world in which individuals can interact through different kinds of virtual technology.For example, a metaverse could permit people living on different sides of the world to meet up through technology and virtually go on a vacation, play sports or work together on projects.The main technologies that would drive such a world would be virtual reality, or VR, and augmented reality, AR.Other, yet-to-be invented technologies would also be used to improve experiences within the metaverse.NFT stands for non-fungible token.It is based on a technology called blockchain, which is also used with digital currencies known as cryptocurrencies.