//Get all terms (names) of a taxonomy of a post
$term_obj_list = get_the_terms( $post->ID, 'taxonomy_name' ); ?>

$posts_array = get_posts( array( 'posts_per_page' => -1, 'post_type' => 'fabric_building', 'tax_query' => array( array( 'taxonomy' => 'fabric_building_types', 'field' => 'term_id', 'terms' => $cat->term_id, ) ) )
);

// RETRIVE TERM SLUG ( for single.php or template-part )
$terms = get_the_terms( $post->ID, 'your-taxonomy' );
if ( !empty( $terms ) ){ // get the first term $term = array_shift( $terms ); echo $term->slug;
}

//Get selected terms of a post by taxonomy
$selectedTerms = wp_get_post_terms(get_the_ID(),'TAXONOMY_NAME');
foreach($selectedTerms as $term){	echo $term->name;
}

You need to pass an additional argument to get_terms(). The default is to hide
"empty" terms-- terms which are assigned to no posts.
$terms = get_terms([ 'taxonomy' => $taxonomy, 'hide_empty' => false,
]);

<?php $taxonomy = 'my_taxonomy'; // this is the name of the taxonomy $terms = get_terms($taxonomy); $args = array( 'post_type' => 'post', 'tax_query' => array( array( 'taxonomy' => 'updates', 'field' => 'slug', 'terms' => wp_list_pluck($terms,'slug') ) ) ); $my_query = new WP_Query( $args ); if($my_query->have_posts()) : while ($my_query->have_posts()) : $my_query->the_post(); // do what you want to do with the queried posts endwhile; endif; ?>

$term = get_term_by( 'slug', get_query_var( 'term' ), get_query_var( 'taxonomy' ) );
echo $term->name; // will show the name
echo $term->slug; // will show the slug

INSIDE TAXONOMY PAGES
$term = get_queried_object();
$term_id = $term->term_id;

foreach ($myterms as $term) :
$args = array( 'tax_query' => array( array( $term->slug ) )
);
// assigning variables to the loop
global $wp_query;
$wp_query = new WP_Query($args);
// starting loop
while ($wp_query->have_posts()) : $wp_query->the_post();
the_title();
blabla....
endwhile;
endforeach;