Taxonomy term

For loop type taxonomy_term, here are the query parameters and fields.

Query parameters

children - Set true to include only child terms
Type: boolean
exclude - Exclude terms by ID(s) or slug(s)
Type: string, array
hide_empty - Hide terms not assigned to any post - true or false (default)
Type: boolean
id - Get terms by ID(s)
Type: number, array
include - Include terms by ID(s) or slug(s)
Type: string, array
name - Get terms by name/slug(s)
Type: string, array
order - Order: asc (ascending) or desc (descending)
Type: string - Default: asc
orderby - Order by one of: name, title (default), term_id, menu_order, count
Type: string - Default: title
orderby_field - Order by custom field
Type: string
orderby_field_number - Order by custom field whose value is a number
Type: string
parent - Get terms by its parent term's ID or slug
Type: number, string
parents - Set true to include only top-level parent terms
Type: boolean
post - Corresponding post ID(s) for term retrieval or "current" for current post
Type: number, array
taxonomy - Get terms by taxonomy
Type: string
terms - Alias for "include"
Type: string, array

ancestors - Ancestor term IDs (or loop instance) from lowest to highest level; Set reverse=true to go from top-level down
Loop type: taxonomy_term
children - Children term IDs (or loop instance)
Loop type: taxonomy_term
count - Post count
id - Term ID
name - Term name
parent - Parent term ID (or loop instance)
Loop type: taxonomy_term
posts - Loop instance of posts that belong to current term
Loop type: post
taxonomy - Taxonomy name (or loop instance)
Loop type: taxonomy
title - Term title
url - URL to term archive page

Use the taxonomy attribute as a shortcut.

<Loop taxonomy=category>
  <Field title />
</Loop>

The above is the same as:

<Loop type=taxonomy_term taxonomy=category>
  <Field title />
</Loop>

The Taxonomy tag provides another way to express it.

<Taxonomy category>
  <Term title />
</Taxonomy>