all-cats-tags.php

function departmentlist() {
$categories = get_categories( array(
    'orderby' => 'name',
    'order'   => 'ASC'
) );
echo '<br />';
foreach( $categories as $category ) {
    $category_link = sprintf( 
        '<a href="%1$s">%2$s</a>',
        esc_url( get_category_link( $category->term_id ) ),
        esc_html( $category->name )
    );
    echo '<tab>' . sprintf( esc_html__( '%s', 'textdomain' ), $category_link ) . '</tab> ';
}
}
add_shortcode('departments', 'departmentlist');


function subjectlist() {
$tags = get_tags( array(
    'orderby' => 'name',
    'order'   => 'ASC'
) );
echo '<br />';
foreach( $tags as $tag ) {
    $tag_link = sprintf( 
        '<a href="%1$s">%2$s</a>',
        esc_url( get_tag_link( $tag->term_id ) ),
        esc_html( $tag->name )
    );
    echo '<tab>' . sprintf( esc_html__( '%s', 'textdomain' ), $tag_link ) . '</tab> ';
}
}
add_shortcode('subjects', 'subjectlist');