Here you will get relavant Keywords of your target Keyword, Free Keyword Planner tool
Free Keyword checker, Google Keyword Planner, Keyword research tool
Keyword Suggestion checker is the free SEO Tool to find relavant Keyword or similar Keywords for SEO Keyword research planning purpose.
It is useful because sometimes we may need to find alternate low Competition keyword for our website page to get good ranking position easily instead of putting high competition keyword, that may not give you results instantly.
Ranking of useful Keyword in Top 100 pages is very important for getting High Traffic and increasing the Market value of any website.
The more keyword your website has in top 100 ranking in Google SERP result, or Yandex/Baidu SERP result, the high chances of getting high website traffic.