Keyword research is absolutely the basic step of SEO. Here is the classification of keywords: Core Keywords and Auxiliary Keywords.
Core keywords can be considered as the axis of your site, which are responsible for the main content description of your website. All of your work should serve the axis. From the SEO’s standpoint, core keywords don’t have much meaning to the site, but the performance in the SERPs after searching for core keywords matters a lot. The right core keywords can improve the traffic and the conversation rate effectively. Choose three to five core keywords for your site. The business name, product names and service names are usually the good choices.
Auxiliary keywords refer to some interpretations or terms that are relevant with the core keywords, which are supplements to the core keywords. You can have numerous core keywords as their can help attract the target audience. You don’t have to consider whether the word can contribute to conversation, and it should be appear in your list if it’s relevant with your core keywords. Select 200 or so auxiliary keywords or phrases and try to write for them.
Choose the right core keywords and several auxiliary keywords to support them and always focus on the writing. You’ll get a large traffic and numerous of followers eventually.