Moz keyword research tool is like SEMrush or Ahrefs which provide tons of keyword ideas around seed keywords, but features like Organic CTR and Priority make it special.
Organic CTR shows the percentage of clicks you can get when you are in the top 10 position on SERP(Search Engine Result Page). If SERP has more ads, knowledge graph and other SERP features your CTR will be low.
Priority combines all factors like search volume, difficulty and CTR. Higher priority shows that you should target a particular keyword.
Plans and Pricing
In the free version of this tool you can get keywords ideas for only 10 queries a day.
So to take full advantage of this tool subscribe to Pro.