The meaning of invention is the creation of a new configuration, composition of matter, device, or process. Some inventions are based on pre-existing models or ideas. Other inventions are radical breakthroughs which may extend the boundaries of human knowledge or experience.
Inventions become common in usage are innovations, and may be a major breakthroughs or of minor and incremental impact. The effects can also be inbetween these two extremes.
An invention that is novel and not obvious to those who are skilled in the same field may be able to obtain the legal protection of a patent. There is also a cultural invention which is an innovative set of useful social behaviors adopted by people and passed on to others.