What is the diference between indexing and crawling?

[sanjaytech]

-Crawling or spidering is a term used when Google, or another search engine, sends its bot to a web page or web post and "reads" the page. Crawling is the first part of having a search engine recognize your page and show it in search results.
-A page is indexed by Google after the completion of crawling. It just analysed the content and meaning then it will be stored in the Google database.