diff --git a/documentation/ref-manual/introduction.xml b/documentation/ref-manual/introduction.xml
index c28adea1d8..c27bf175bf 100644
--- a/documentation/ref-manual/introduction.xml
+++ b/documentation/ref-manual/introduction.xml
@@ -702,6 +702,13 @@
                 For more information on BitBake, see the
                 <ulink url='&YOCTO_DOCS_BB_URL;'>BitBake User Manual</ulink>.
                 </para></listitem>
+            <listitem><para id='board-support-package-bsp-term'>
+                <emphasis>Board Support Package (BSP):</emphasis>
+                A group of drivers, definitions, and other components that
+                provide support for a specific hardware configuration.
+                For more information on BSPs, see the
+                <ulink url='&YOCTO_DOCS_BSP_URL;'>Yocto Project Board Support Package (BSP) Developer's Guide</ulink>.
+                </para></listitem>
             <listitem>
                 <para id='build-directory'>
                 <emphasis>Build Directory:</emphasis>
@@ -768,6 +775,13 @@
                     Directory.
                 </note>
                 </para></listitem>
+            <listitem><para id='build-system-term'>
+                <emphasis>Build System:</emphasis>
+                The system used to build images in a Yocto Project
+                Development environment.
+                The build system is sometimes referred to as the
+                development host.
+                </para></listitem>
             <listitem><para>
                 <emphasis>Classes:</emphasis>
                 Files that provide for logic encapsulation and inheritance so
@@ -973,6 +987,14 @@
                 to build, the images to build, and use the
                 <filename>.bb</filename> file extension.
                 </para></listitem>
+            <listitem><para id='reference-kit-term'>
+                <emphasis>Reference Kit:</emphasis>
+                A working example of a system, which includes a
+                <link linkend='board-support-package-bsp-term'>BSP</link>
+                as well as a
+                <link linkend='build-system-term'>build system</link>
+                and other components, that can work on specific hardware.
+                </para></listitem>
             <listitem>
                 <para id='source-directory'>
                 <emphasis>Source Directory:</emphasis>