Wordpress: wp_set_object_terms() not adding new term to custom post and custom taxonomy - YouTube
get_the_terms() – Gets the taxonomy elements (terms) that are attached to the specified post. WP Function.
Update more terms with wp_set_object_terms | WordPress.org
custom taxonomy - Set term on an attachment using wp_set_object_terms and want to display the full term text but it's showing a slug instead - WordPress Development Stack Exchange
How to Create Taxonomy for Users in Wordpress - Codebriefly
ACF | Registering a Custom Taxonomy
Wordpress: wp_set_object_terms() not adding new term to custom post and custom taxonomy - YouTube
Getting invalid taxonomy in wp_set_object_terms function - Toolset