added note about abbreviations (#1121)

Co-authored-by: Liudmila Molkova <limolkova@microsoft.com>

.chloggen/abbr.yaml

@@ -0,0 +1,22 @@
+# Use this changelog template to create an entry for release notes.
+#
+# If your change doesn't affect end users you should instead start
+# your pull request title with [chore] or use the "Skip Changelog" label.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+
+# The name of the area of concern in the attributes-registry, (e.g. http, cloud, db)
+component: all
+
+# A brief description of the change. Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Define name abbreviations guidelines in attribute and metric names.
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+# The values here must be integers.
+issues: [1121]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:

docs/general/attribute-naming.md

@@ -7,7 +7,8 @@
 
 <!-- toc -->
 
-- [Name Pluralization guidelines](#name-pluralization-guidelines)
+- [Name Pluralization Guidelines](#name-pluralization-guidelines)
+- [Name Abbreviation Guidelines](#name-abbreviation-guidelines)
 - [Name Reuse Prohibition](#name-reuse-prohibition)
 - [Recommendations for OpenTelemetry Authors](#recommendations-for-opentelemetry-authors)
 - [Recommendations for Application Developers](#recommendations-for-application-developers)
@@ -57,7 +58,7 @@ Names SHOULD follow these rules:
   versa: any existing namespace prohibits existence of an equally named
   attribute key in the future.
 
-## Name Pluralization guidelines
+## Name Pluralization Guidelines
 
 - When an attribute represents a single entity, the attribute name SHOULD be
   singular. Examples: `host.name`, `container.id`.
@@ -70,6 +71,16 @@ Names SHOULD follow these rules:
   [Metric Name Pluralization Guidelines](./metrics.md#pluralization) SHOULD be
   followed for the attribute name.
 
+## Name Abbreviation Guidelines
+
+Abbreviations MAY be used when they are widely recognized and commonly used.
+
+Examples include common technical abbreviations such as `IP`, `DB`, `CPU`,
+`HTTP`, `URL`, or product names like `AWS`, `GCP`, `K8s`.
+
+Abbreviations SHOULD be avoided if they are ambiguous, for example, when they apply
+to multiple products or concepts.
+
 ## Name Reuse Prohibition
 
 A new attribute MUST NOT be added with the same name as an attribute that

docs/general/metrics.md

@@ -82,6 +82,9 @@ and confusion for end users. (For example, prefer `process.runtime.java.gc*` ove
 `process.runtime.gc.*`.) Measures of many operating system metrics are similarly
 ambiguous.
 
+Metric names and attributes SHOULD follow the general
+[name abbreviation guidelines](attribute-naming.md#name-abbreviation-guidelines).
+
 ### Name Reuse Prohibition
 
 A new metric MUST NOT be added with the same name as a metric that existed in