Answers for "get taxonomy of post"

get posts from selected taxonomy

$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,
            )
        )
    )
);

wordpress get taxonomy of a post

<?php $term_obj_list = get_the_terms( $post->ID, 'taxonomy_name' ); ?>

get term id by post id

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