It indicates the process of manipulating Google to rank keywords. There are some mistakes usually made by people with a lack of SEO knowledge–
- Repetition of unnatural keywords
- Spinning Contents with zero value to the users
- Use the synonymous words again and again
Avoid Hidden Text: Don’t use the text not visible to users but search engine bot can crawl it. You can use color or, hide the content under images. It will not work. Be honest and write for the users. Google will consider your content valuable.