The first and important part of the SEO process is Keyword Research. Keyword research is selecting the words which reflects the website's purpose or the business handled through the website.It may also reflect the product which the website displays.
The Process of keyword research starts from selecting the few "words" related to the product or to the purpose of the business. Once the word is choosen, with the help of Google Keyword Planner choose the best keyword and perform the SEO to the website targeting the selected keyword. The Keyword research is done based content of the website.
Keyword research is much important to the e-commerce websites where the traders sell the product. Customers may visit the website based on their requirement, thus optimizing the website based on the product is obsolutely necessary.