diff --git a/docs/resource/host.md b/docs/resource/host.md
index 150755dc1..7469f8f40 100644
--- a/docs/resource/host.md
+++ b/docs/resource/host.md
@@ -6,6 +6,9 @@
 
 **Description:** A host is defined as a computing instance. For example, physical servers, virtual machines, switches or disk array.
 
+The `host.*` namespace SHOULD be exclusively used to capture resource attributes.
+To report host metrics, the `system.*` namespace SHOULD be used.
+
 <!-- semconv host -->
 | Attribute  | Type | Description  | Examples  | Requirement Level |
 |---|---|---|---|---|
diff --git a/docs/system/system-metrics.md b/docs/system/system-metrics.md
index 745c9c25a..a06d5b966 100644
--- a/docs/system/system-metrics.md
+++ b/docs/system/system-metrics.md
@@ -11,6 +11,12 @@ metrics in OpenTelemetry. Consider the [general metric semantic
 conventions](/docs/general/metrics.md#general-metric-semantic-conventions) when creating
 instruments not explicitly defined in the specification.
 
+The `system.*` namespace SHOULD be exclusively used to report hosts' metrics.
+The `system.*` namespace SHOULD only be used when the metrics are collected from within the target system. (physical servers, virtual machines etc).
+Metrics collected from technology-specific, well-defined APIs (e.g. Kubelet's API or container runtimes)
+should be reported under their respective namespace (e.g. k8s.*, container.*).
+Resource attributes related to a host, SHOULD be reported under the `host.*` namespace.
+
 <!-- Re-generate TOC with `markdown-toc --no-first-h1 -i` -->
 
 <!-- toc -->