diff --git a/README.md b/README.md
index 8289fb3..c404042 100644
--- a/README.md
+++ b/README.md
@@ -151,6 +151,9 @@ for i, el in enumerate(<collection> [, i_start]):
 
 Named Tuple
 -----------
+* **Tuple is an immutable and hashable list.**
+* **Named tuple is a subclass of tuple with named elements.**
+
 ```python
 >>> from collections import namedtuple
 >>> Point = namedtuple('Point', 'x y')