diff --git a/doc/source/containers.rst b/doc/source/containers.rst
index ae8e485..c8ff53f 100644
--- a/doc/source/containers.rst
+++ b/doc/source/containers.rst
@@ -11,7 +11,7 @@ Consequently just insert procedure are needed
 Lists
 -----
 
-Correspond to an ordered list of values belonging an elementary type.
+Correspond to an ordered collection of values belonging an elementary type.
 
 At its creation
 
@@ -19,7 +19,7 @@ At its creation
 Sets
 ----
 
-Correspond to an unordered set of values belonging an elementary type.
+Correspond to an unordered collection of values belonging an elementary type.
 
 
 Dictionaries