The archive page brings out the posts in a specific order. It could be based on Date, Author, Category, tag, Search, 404, Project categories, Shop etc. For like Tag page, posts come out only for a specific Tag name. Similarly, for Date, Category, Search, Project category, shop. Shop Archive title stands for the WooCommerce products.
In your WP Admin Panel, go to => Appearance => Customize > Template Settings => Archive page title
Below GIF screenshot will give you more clear understanding: