Updates references to different schemas and abbreviations

Author: philipashlock

Diff for: metadata-resources.md

@@ -10,6 +10,13 @@ This section provides further background and resources to assist agencies in imp
 
 In addition to template and sample files we also produce Common Core Metadata schema in JSON schema format. [JSON schema](http://json-schema.org/) describes a JSON data format. It can be used to automatically validate Data.json files and to generate forms for creating JSON.
 
+### Terms and Abbreviations ###
+* **POD** - [Project Open Data](/schema)
+* **JSON** - [JavaScript Object Notation](http://json.org/)
+* **DCAT** - [Data Catalog Vocabulary](http://www.w3.org/TR/vocab-dcat/)
+* **CKAN** - [CKAN software](http://ckan.org/)
+* **Schema.org** - [schema.org](http://schema.org/)
+
 ### JSON Schema Files ###
 
 * 1.0 Final Schema: [Single Entry](/schema/1_0_final/single_entry.json) and [Catalog](/schema/1_0_final/catalog.json)

Diff for: schema.md

@@ -43,7 +43,7 @@ Links to downloadable examples of metadata files developed in this and other for
 -----------------------------
 The following "common core" fields are required, to be used to describe each entry:
 
-*(Consult the 'Further Metadata Field Guidance' section lower in the page to learn more about the use of each element, including the range of valid entries where appropriate. Consult the [schema maps](/metadata-resources#common-core-required-fields-equivalents) to find the equivalent Data.gov, RDFa Lite, and CKAN fields.)*
+*(Consult the 'Further Metadata Field Guidance' section lower in the page to learn more about the use of each element, including the range of valid entries where appropriate. Consult the [schema maps](/metadata-resources#common-core-required-fields-equivalents) to find the equivalent DCAT, Schema.org, and CKAN fields.)*
 
 {: .table .table-striped}
 Field                   | Label               | Definition
@@ -99,7 +99,7 @@ issued					| Release Date        | Date of formal issuance.
 systemOfRecords			| System of Records   | If the systems is designated as a system of records under the Privacy Act of 1974, provide the URL to the System of Records Notice related to this dataset. 
 
 
-Further Metadata Field Guidance (alphabetical by POD field)
+Further Metadata Field Guidance (alphabetical by field)
 -------------------------------
 
 {: .table .table-striped}