A vocabulary is a living tool that is always changing, evolving and progressing. And we can make an observation this change in the vocabulary by investigating the neology. The evolution of a vocabulary usually occurs in “form” and “meanings” and the factors affecting this change are the social and cultural reasons formed by the speakers using the language. Therefore, if we look at the changes in vocabulary, we are aware of the silent social and cultural history of each word. This understanding is essential to use the vocabulary more appropriately and to use the language with value and purpose. In this article we look at the evolution of, and try to inspire understanding and interest in, Spanish vocabulary. Since Spain has many historical relationships with several neighboring countries rather than with only one country with a single language, it would be meaningful to look at the evolution of Spanish vocabulary, as it contains the diverse history of Spain.