--- a/doc/book/en/intro/concepts/index.rst	Fri Jul 24 13:50:59 2009 +0200
+++ b/doc/book/en/intro/concepts/index.rst	Fri Jul 24 14:33:37 2009 +0200
@@ -67,8 +67,9 @@
 directory is looked up, as well as the paths in :envvar:`CW_INSTANCES_DIR`
 environment variable.
 
-The term application can refer to an instance or to a cube, depending on the
-context. This book will try to avoid using this term and use *cube* and
+The term application is used to refer at "something that should do something as a
+whole", eg more like a project and so can refer to an instance or to a cube,
+depending on the context. This book will try to use *application*, *cube* and
 *instance* as appropriate.
 
 Data Repository
@@ -166,7 +167,7 @@
 At startup, the `registry` or registers base, inspects a number of directories
 looking for compatible classes definition. After a recording process, the objects
 are assigned to registers so that they can be selected dynamically while the
-application is running.
+instance is running.
 
 Selectors
 ~~~~~~~~~
@@ -215,7 +216,7 @@
 
 **No need for a complicated ORM when you have a powerful query language**
 
-All the persistant data in a CubicWeb application is retrieved and modified by using the
+All the persistent data in a CubicWeb instance is retrieved and modified by using the
 Relation Query Language.
 
 This query language is inspired by SQL but is on a higher level in order to