While creating custom post type detail template, there may be need to display list of categories or taxonomies related to it.
For example
wp_get_object_terms()
To display list of all the terms use wp_get_object_terms
$tax_lists = wp_get_object_terms($post->ID, 'articles_cat'); // here articles_cat is taxonomy slug
To display list of all the terms on post detail page by name
$tax_lists = wp_get_object_terms($post->ID, 'articles_cat',array("fields" => "name"));
// here articles_cat is taxonomy slug
To display category on post detail page
using wp_get_object_terms() categories of a post can be displayed on post detail page i.e. single.php
$cat_lists = wp_get_object_terms($post->ID, 'category'); // here articles_cat is taxonomy slug
What is alternative of get_the_category() on post detail page
use wp_get_object_terms() instead of get_the_category() to get list of terms related to a post
Get values of all terms of a custom taxonomy
$terms = get_terms([ 'taxonomy' => $taxonomy, 'hide_empty' => false, ]);