diff --git a/ui/src/css/index.css b/ui/src/css/index.css
index 4ed316e..808cb5d 100644
--- a/ui/src/css/index.css
+++ b/ui/src/css/index.css
@@ -7,14 +7,14 @@ CSS Cascade Layers.
 
 /*
 ----------------------------------------------------------------------------
-Core CSS design tokens.
+"Primitive" CSS design tokens.
 ----------------------------------------------------------------------------
 */
 @import 'tokens.css' screen;
 
 /*
 ----------------------------------------------------------------------------
-Base scaffold, containing "system" design tokens.
+Base scaffold, containing "semantic" design tokens.
 ----------------------------------------------------------------------------
 */
 @import 'base/index.css' screen;
diff --git a/ui/src/css/tokens.css b/ui/src/css/tokens.css
index 227ffb8..935af51 100644
--- a/ui/src/css/tokens.css
+++ b/ui/src/css/tokens.css
@@ -1,7 +1,7 @@
 /* stylelint-disable value-keyword-case */
 /*
 ----------------------------------------------------------------------------
-CSS custom properties (e.g. from "design tokens") for dynamic theming.
+"Primitive" design tokens for dynamic theming.
 ----------------------------------------------------------------------------
 */
 :root {