The distinctions here can become quite urgent depending on the kind of product you’re selling or the kind of customer you’re looking to find. If you’re trying to find people who are interested in selling their homes in the East Village, then you don’t want to target people who are just in the East Village on their spring break or while visiting family. If you’re trying to target high net worth individuals on vacation in Montauk, New York because you believe they’re ripe targets for ads about buying beachfront houses in Montauk, then you don’t want to waste your ad spend showing ads to locals.
A competitive analysis won’t help you with pressing business decisions, such as what product feature to build next. (Never copy your competitors for the sake of it; they could be 100% winging it!) Moreover, if you’re the industry leader, the value of analyzing competitors is limited because you’re the one leading the pack through uncharted territory.
That said, if you’ve never had to come up with a keyword strategy before, it might seem a bit daunting to generate a list of terms that will drive qualified search traffic to your website. Not to worry. Creating an effective keyword strategy—figuring out which terms you should create content for—isn’t hard. It just involves a little bit of reverse engineering and some research.

I mentioned earlier that I recently performed a competitive analysis for a collaborative meeting note-taking feature, to be introduced in the app that I was developing for a client. The goals for my research were very general because innumerable apps all provide this type of functionality, and the product I was working on was in the very early stages of development.
When using the Keyword Explorer, Ahrefs will also produce the "parent topic" of the keyword you looked up, as you can see in the screenshot above, underneath the Keyword Difficulty meter. A keyword's parent topic is a broader keyword with higher search volume than your intended keyword, but likely has the same audience and ranking potential -- giving you more a valuable SEO opportunity when optimizing a particular blog post or webpage.