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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Eduncle Best Answer
Website Crawling is the automated fetching of web pages by a software process, the purpose of which is to index the content of websites so they can be searched. The crawler analyzes the content of a page looking for links to the next pages to fetch and index.
A spider is a program or script written to browse the World Wide Web in a systematic manner for the purpose of indexing websites. A spider may also be referred to as a web bot, web crawler, or web robot.