What Is a Stop Word?

Stop words mean that in information retrieval, in order to save storage space and improve search efficiency, certain words or words are automatically filtered out before or after processing natural language data (or text). These words or words are called Stop Words (stop words). These stop words are entered manually and are not automatically generated. The generated stop words form a stop list. However, there is no clear stop list that works for all tools. There are even tools that explicitly avoid using stop words to support phrase searches.