TIP: Journals often set a maximum word count for Abstracts, often 250 words, and no citations. This is to ensure that the full Abstract appears in indexing services. Keywords are a tool to help indexers and search engines find relevant papers. … However, to be effective, Keywords must be chosen carefully.
For More Information Please Refer: https://www.springer.com/gp/authors-editors/authorandreviewertutorials/writing-a-journal-manuscript/title-abstract-and-keywords/10285522