What is the difference between a מנורה and a חנוכיה?

Arch of Titus	http://en.wikipedia.org/wiki/File:Arch_of_Titus_Menorah.png
Replica of Temple Menorah	http://en.wikipedia.org/wiki/File:Menorah_0307.jpg
K'nesset Menorah	http://en.wikipedia.org/wiki/File:Menora_vor_der_Knesset.jpg

Hanukkiyah-Menorah