diff --git a/HIG/source/style/writing/vocabulary.rst b/HIG/source/style/writing/vocabulary.rst
index 1a40a2b..cb93f8c 100644
--- a/HIG/source/style/writing/vocabulary.rst
+++ b/HIG/source/style/writing/vocabulary.rst
@@ -1,24 +1,24 @@
 Vocabulary
 ==========
 
 Consistenly using the same words to refer to the same concepts avoids confusion.
 See below word choice recommendations for common computing concepts.
 
 Directories and Folders
 -----------------------
 
 .. image:: /img/folder.svg
    :align: right
 
 For containers of files and other containers, use **folder**. Avoid *dir* or
 *directory*.
 
 If a folder *A* contains a folder *B*:
 
 -   *A* is the **containing folder** of *B*. Avoid *parent folder*.
 
 -   *B* is a **subfolder** of *A*. Avoid *child folder* or *sub-folder*.
 
-A folder that does not have a parent folder is known as the **root folder**.
+A folder that does not have a containing folder is known as the **root folder**.
 Avoid using simply *root*, except for contexts where the term is already
 accompanied by a folder icon.