diff --git a/catalogs/catalog.py b/catalogs/catalog.py
index 1aff80af..67de9fda 100644
--- a/catalogs/catalog.py
+++ b/catalogs/catalog.py
@@ -6,27 +6,27 @@ Copyright © 2022 Project Author Guille Gutierrez guillermo.gutierrezmorote@conc
 
 class Catalog:
   """
-  Catalog name
+  Catalogs base class not implemented instance of the Catalog base class, catalogs will inherit from this class.
   """
 
   @property
-  def names(self):
+  def names(self, category=None):
     """
     Base property to return the catalog entries names
-    :return: not implemented error
+    :return: Catalog names filter by category if provided
     """
     raise NotImplementedError
 
   def entries(self, category=None):
     """
     Base property to return the catalog entries
-    :return: not implemented error
+    :return: Catalog content filter by category if provided
     """
     raise NotImplementedError
 
   def get_entry(self, name):
     """
     Base property to return the catalog entry matching the given name
-    :return: not implemented error
+    :return: Catalog entry with the matching name
     """
     raise NotImplementedError
diff --git a/catalogs/greenery_catalog_factory.py b/catalogs/greenery_catalog_factory.py
index 3b70687a..905f1602 100644
--- a/catalogs/greenery_catalog_factory.py
+++ b/catalogs/greenery_catalog_factory.py
@@ -5,8 +5,9 @@ Copyright © 2022 Project Author Guille Gutierrez guillermo.gutierrezmorote@conc
 """
 
 from pathlib import Path
+from typing import TypeVar
 from catalogs.greenery.greenery_catalog import GreeneryCatalog
-
+Catalog = TypeVar('Catalog')
 
 class GreeneryCatalogFactory:
   """
@@ -19,25 +20,17 @@ class GreeneryCatalogFactory:
     self._path = base_path
 
   @property
-  def _nrel(self) -> GreeneryCatalog:
+  def _nrel(self):
     """
-    Return a greenery catalog using ecore as datasource
+    Return a greenery catalog based in NREL using ecore as datasource
     :return: GreeneryCatalog
     """
     return GreeneryCatalog((self._path / 'ecore_greenery_catalog.xml').resolve())
 
   @property
-  def catalog(self) -> GreeneryCatalog:
+  def catalog(self) -> Catalog:
     """
     Enrich the city given to the class using the class given handler
-    :return: City
+    :return: Catalog
     """
     return getattr(self, self._file_type, lambda: None)
-
-  @property
-  def catalog_debug(self) -> GreeneryCatalog:
-    """
-    Enrich the city given to the class using the class given handler
-    :return: City
-    """
-    return GreeneryCatalog((self._path / 'ecore_greenery_catalog.xml').resolve())