Semantic tags are HTML elements that provide a meaning or context to the content they contain. And They are SEO-friendly web pages.

Semantic tags are HTML elements that provide meaning or context to the content they contain. They help web developers to create more accessible and SEO-friendly web pages. Here are some uses of semantic tags:

1. Better structure: Semantic tags help to organize the content of a web page in a more meaningful and structured way. By using semantic tags like <header>, <nav>, <section>, <article>, <aside>, and <footer>, developers can create a more logical hierarchy of content that is easier to understand and navigate.

2. Accessibility: Semantic tags help to make web pages more accessible for people with disabilities. For example, by using the <nav> tag to group navigation links, screen readers can easily identify and skip over the navigation links, making it easier for visually impaired users to focus on the main content of the page.

3. SEO: Semantic tags can help to improve the search engine optimization (SEO) of a web page by providing context and meaning to the content. Search engines can use semantic tags to understand the structure and hierarchy of the content on a page, which can help to improve the relevance and ranking of the page in search results.

4. Maintainability: Semantic tags can make web pages easier to maintain and update by providing a consistent structure and organization. By using semantic tags, developers can quickly and easily identify the purpose and meaning of different sections of a web page, making it easier to update and modify the content as needed.

5. Reusability: Semantic tags can also make it easier to reuse and repurpose content across different pages and applications. By using semantic tags to structure content, developers can create reusable components that can be easily adapted and reused in different contexts and applications.