The process in which a new word becomes part of the accepted vocabulary of a community is known as institutionalisation. The reason why neologisms have become embedded in every-day vocabulary so quickly is because they swiftly pass through all the stages of this process. First, they are used more and more frequently as they are spread via social media and various applications. Second, their meaning does not need a lot of definition since the pictures or applications are usually self-explanatory. Ultimately these words start appearing in various forms within common texts.
I edited this quick-and-dirty infographic (using “Paint”) to provide an easy to understand explanation of how neologisms are created. I hope you enjoy it! A better quality is available on Pinterest.
Infographic on neologims.TIF