terms

get_terms supports a meta_query which calls a new WP_Meta_Query parameter as you can see here. To query your terms with your desired meta, you could change your function call to something like this: $args = array( ‘taxonomy’ => ‘categoria-de-productos’, ‘orderby’ => ‘meta_value_num’, ‘order’ => ‘ASC’, ‘hide_empty’ => false, ‘hierarchical’ => false, ‘parent’ => 0, ‘meta_query’ … Read more

The idea of term groups was to have a term with multiple aliases. This feature doesn’t seem to be fully backed and is therefore practically never used.