People find little misunderstanding in the Indexing and crawling process of search engines. Can anybody brief it easily?

SEO is a very big, deep sea. To fully understand SEO, we should know some basic SEO terms.

Crawling and indexing are two such terms.

If you have been in the web world for a while, you’ve at least heard the words: 

• Google Crawling and Indexing.

These are the two terms upon which the entire web world depends.

Let’s define, understand, and get some in-depth information about crawling and indexing.

Crawling:

• When Google visits your website for tracking purposes. This process is done by Google’s Spider crawler.

Indexing:

• After crawling has been done, the results get put onto Google’s index (i.e. web search).