What is the main purpose of using keyword in SEO?

[kumarvinod]

Hlo friends,
Can anyone tell me, What is the main purpose of using keyword in SEO?

[Rudrasharma]

These keywords or phrases are used by the search engines to populate the subjects over the internet.

[shyamdas]

Keyword is a single word, and while a combination of those keywords makes phrases

[najishahmed]

Keywords is used to optimize the full site with a simple word that word referred as Keyword.

[DenialClark]

To populate your subject over internet.

[saketbhai]

thanks for share this useful information