Selenium excels in scraping more complex, dynamic pages at a larger expense in computational resources. Beautiful Soup is easy to get started with, and while it has fewer websites it can scrape, it's perfect for smaller projects with well-structured source pages.
Beautiful Soup is a Python package for extracting data from HTML and XML files for web scraping needs. It generates a parse tree from the page source code, which can be used to extract data in a more legible and hierarchical manner.