Merge pull request #51800 from dkarczmarski/ja-sync-48318

[ja] sync with PR 48318

Author: k8s-ci-robot

content/ja/docs/reference/glossary/node.md

@@ -8,6 +8,7 @@ short_description: >
 
 aka: 
 tags:
+- core-object
 - fundamental
 ---
  ノードはKubernetesのワーカーマシンです。