The name itself should differentiate the products. One is called AffiliateBooster Theme, and the other is called the AffiliateBooster Plugin

The AffiliateBooster Theme is a WordPress theme, and it offers industry-leading features, flexibility, and speed. You can use it to create an affiliate website, a news website, or practically any other website.

The AffiliateBooster Plugin is a Gutenberg Blocks plugin that adds beautiful, eye-catching, and high converting blocks to your arsenal. You can use these plugins to improve your articles on your affiliate website. You can use the plugin on any website that uses the Gutenberg (Block Editor) on WordPress. Using the AffiliateBooster Theme is not mandatory to use the plugin.