diff --git a/docs/source/collective_decision_procedures.md b/docs/source/collective_decision_procedures.md
index 8b0beae..060a265 100644
--- a/docs/source/collective_decision_procedures.md
+++ b/docs/source/collective_decision_procedures.md
@@ -3,9 +3,9 @@ Overview
 
 We have three types of collective decision procedures: 
 
-  1. Voting Method: given edata, outputs a sorted list of candidates, representing tied winners;
+  1. Voting Method: given edata, outputs a sorted list of candidates, representing tied winners (aka "social choice function");
   2. Probabilistic Voting Method: given edata, outputs a dictionary whose keys are candidates and whose values are probabilities;
-  2. Social Welfare Function: given edata, outputs a [Ranking](ballots.md#ranking-class) of the candidates.
+  2. Social Welfare Function: given edata, outputs a [Ranking](ballots.md#ranking-class) of the candidates (aka "social ordering function").
 
 We further categorize collective decision procedures based on the input from the voters: 
 
@@ -72,4 +72,4 @@ We further categorize collective decision procedures based on the input from the
 .. autofunction:: pref_voting.helper.vm_from_swf
 
 
-```
\ No newline at end of file
+```