Here are some functions commonly used in WordPress theming and their roles:

1. wp_enqueue_style()
   • Role: Enqueue CSS stylesheets into the theme.
   • Usage: This function is used to add custom styles or modify existing styles to achieve the desired visual appearance. It ensures that the stylesheets are properly loaded and applied to the theme.
2. wp_enqueue_script()
   • Role: Enqueue JavaScript files into the theme.
   • Usage: This function is used to add custom scripts or modify existing scripts to enhance the functionality of the theme. It ensures that the JavaScript files are loaded in the correct order and applied to the theme.
3. get_header()
   • Role: Retrieve the header template file.
   • Usage: This function retrieves the header.php template file, which contains the code for the header section of the website. It typically includes the site logo, navigation menu, and any other elements that should appear at the top of every page.
4. get_footer()
   • Role: Retrieve the footer template file.
   • Usage: This function retrieves the footer.php template file, which contains the code for the footer section of the website. It typically includes elements such as copyright information, additional navigation, or social media links.
5. the_post()
   • Role: Set up the current post object.
   • Usage: This function is used within the loop to set up the current post object, allowing you to access and display various information about the post, such as the title, content, metadata, and comments.