This does not matter to say! Both Islamic and Muslims do teach the honor killings. Isalm and Muslim are in same meaning as terms!
It matters greatly! It would be illogical fallacy if you insist such an idea.
A Muslim does an honor killing.
A Muslim follows the faith of Islam.
Therefore Islam condones honor killings.
That's an outlandish statement. The bottom line is that Islam does not teach it nor condone it. It is a belief of certain Muslims who think it's okay to do honor killings.