diff --git a/docs/kiri-moto/faq.md b/docs/kiri-moto/faq.md
index 67cfa1ee..ce34a310 100644
--- a/docs/kiri-moto/faq.md
+++ b/docs/kiri-moto/faq.md
@@ -43,3 +43,8 @@ Start with the [forum](https://forum.grid.space/) discussions. If you want to ge
 
 Kiri comes from Kiri-e, which is the Japanese art of paper-cutting. Moto is short for "modeling tool".
 
+## What are the `.kmz` and `.km` file formats short for?
+
+- `kmz` stands for **Kiri Moto Zip**, and contains an entire zipped workspace
+- `km` stands for **Kiri Moto**, and contains [CAM tool](/CAM/tools) paramers.
+