diff --git a/content/ja/docs/concepts/_index.md b/content/ja/docs/concepts/_index.md
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--- a/content/ja/docs/concepts/_index.md
+++ b/content/ja/docs/concepts/_index.md
@@ -1,5 +1,5 @@
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-title: Concepts
+title: コンセプト
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@@ -13,7 +13,7 @@ The Concepts section helps you learn about the parts of the Kubernetes system an
 
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-## Overview
+## 概要
 
 To work with Kubernetes, you use *Kubernetes API objects* to describe your cluster's *desired state*: what applications or other workloads you want to run, what container images they use, the number of replicas, what network and disk resources you want to make available, and more. You set your desired state by creating objects using the Kubernetes API, typically via the command-line interface, `kubectl`. You can also use the Kubernetes API directly to interact with the cluster and set or modify your desired state.
 
@@ -24,7 +24,7 @@ Once you've set your desired state, the *Kubernetes Control Plane* works to make
   * **[kubelet](/docs/admin/kubelet/)**, which communicates with the Kubernetes Master.
   * **[kube-proxy](/docs/admin/kube-proxy/)**, a network proxy which reflects Kubernetes networking services on each node.
 
-## Kubernetes Objects
+## Kubernetesオブジェクト
 
 Kubernetes contains a number of abstractions that represent the state of your system: deployed containerized applications and workloads, their associated network and disk resources, and other information about what your cluster is doing. These abstractions are represented by objects in the Kubernetes API; see the [Kubernetes Objects overview](/docs/concepts/abstractions/overview/) for more details. 
 
@@ -43,23 +43,23 @@ In addition, Kubernetes contains a number of higher-level abstractions called Co
 * [DaemonSet](/docs/concepts/workloads/controllers/daemonset/)
 * [Job](/docs/concepts/workloads/controllers/jobs-run-to-completion/)
 
-## Kubernetes Control Plane
+## Kubernetesコントロールプレーン
 
 The various parts of the Kubernetes Control Plane, such as the Kubernetes Master and kubelet processes, govern how Kubernetes communicates with your cluster. The Control Plane maintains a record of all of the Kubernetes Objects in the system, and runs continuous control loops to manage those objects' state. At any given time, the Control Plane's control loops will respond to changes in the cluster and work to make the actual state of all the objects in the system match the desired state that you provided.
 
 For example, when you use the Kubernetes API to create a Deployment object, you provide a new desired state for the system. The Kubernetes Control Plane records that object creation, and carries out your instructions by starting the required applications and scheduling them to cluster nodes--thus making the cluster's actual state match the desired state.
 
-### Kubernetes Master
+### Kubernetesマスター
 
 The Kubernetes master is responsible for maintaining the desired state for your cluster. When you interact with Kubernetes, such as by using the `kubectl` command-line interface, you're communicating with your cluster's Kubernetes master.
 
 > The "master" refers to a collection of processes managing the cluster state.  Typically these processes are all run on a single node in the cluster, and this node is also referred to as the master. The master can also be replicated for availability and redundancy.
 
-### Kubernetes Nodes
+### Kubernetesノード
 
 The nodes in a cluster are the machines (VMs, physical servers, etc) that run your applications and cloud workflows. The Kubernetes master controls each node; you'll rarely interact with nodes directly.
 
-#### Object Metadata
+#### オブジェクトメタデータ
 
 
 * [Annotations](/docs/concepts/overview/working-with-objects/annotations/)