Let me explain the most basic difference between these two terms.
Visitors: This are unique individuals that pay a visit of quality time on your blog/website. This also makes you know the metric of people who visited your site in a day, week, month or even year.
Views: Here, each visitor (person) can view more than one post on your blog/website, so each visit can accumulate multiple views. This metric is useful because it tells you how interesting or useful your visitors found your site and your content.
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