diff --git a/core/modules/simpletest/simpletest.module b/core/modules/simpletest/simpletest.module
index b595d2c..3c0df04 100644
--- a/core/modules/simpletest/simpletest.module
+++ b/core/modules/simpletest/simpletest.module
@@ -81,10 +81,10 @@ function simpletest_js_alter(&$javascript) {
  *   An associative array containing:
  *   - label: An optional label to be rendered before the results.
  *   - ok: The overall group result pass or fail.
- *   - pass: The number of passed test results.
- *   - fail: The number of failed test results.
- *   - exception: The number of exceptioned test results.
- *   - debug: The number of debugged test results.
+ *   - pass: The number of passes.
+ *   - fail: The number of fails.
+ *   - exception: The number of exceptions.
+ *   - debug: The number of debug messages.
  */
 function template_preprocess_simpletest_result_summary(&$variables) {
   $variables['items'] = _simpletest_build_summary_line($variables);
diff --git a/core/modules/simpletest/templates/simpletest-result-summary.html.twig b/core/modules/simpletest/templates/simpletest-result-summary.html.twig
index 4b7b711..2f87ed0 100644
--- a/core/modules/simpletest/templates/simpletest-result-summary.html.twig
+++ b/core/modules/simpletest/templates/simpletest-result-summary.html.twig
@@ -5,11 +5,12 @@
  *
  * Available variables:
  * - label: An optional label to be rendered before the results.
- * - items: The result pluralized items for each result.
- * - pass: The number of passed test results.
- * - fail: The number of failed test results.
- * - exception: The number of exceptioned test results.
- * - debug: The number of debugged test results.
+ * - items: Pluralized summaries for each result type (number of passes, fails,
+ *   exceptions, and debug messages).
+ * - pass: The number of passes.
+ * - fail: The number of fails.
+ * - exception: The number of exceptions.
+ * - debug: The number of debug messages.
  *
  * @see template_preprocess_simpletest_result_summary()
  *