NEW: Adding concepts

content/modules/ROOT/pages/concepts.adoc

+= Concepts
+
+== Bias
+
+Definition::
+[[bias]]
+[quote, Bias]
+____
+...
+____
+
+Associated properties::
+* xref:definitions.adoc#fairness[Fairness]
+* xref:definitions.adoc#ethics[Ethics]
\ No newline at end of file

content/modules/ROOT/pages/index.adoc

@@ -14,10 +14,14 @@ This web site is under construction.
 
 This documentation lists the set of:
 
-- properties xref:properties.adoc[definitions]
+- Properties xref:properties.adoc[definitions]
 ** xref:properties.adoc#fairness[Fairness]
-** ...
-- associated metrics
+** xref:properties.adoc#ethics[Ethics]
+- Associated concepts
+** xref:concepts.adoc#bias[Bias]
+** xref:concepts.adoc#discrimination[Discrimination]
+** xref:concepts.adoc#equity[Equity]
+- Associated metrics
 - ...
 
 == Contact

content/modules/ROOT/pages/properties.adoc

@@ -2,8 +2,14 @@
 
 == Fairness
 
+Definition::
 [[fairness]]
 [quote, Fairness, Oxford Dictionary]
 ____
 Imperfect and just treatment or behavior without favoritism or discrimination.
-____
\ No newline at end of file
+____
+
+Associated concepts::
+* xref:concepts.adoc#bias[Bias]
+* Discrimination
+* Equity
\ No newline at end of file