[cool_chick]

Insurgent:

1. Rising in revolt against established authority, especially a government.
2. Rebelling against the leadership of a political party.
n.

Terrorist:

A radical who employs terror as a political weapon; usually organizes with other terrorists in small cells; often uses religion as a cover for terrorist activities
n.

Iraqi:

A native or inhabitant of Iraq; the majority of Iraqi are Arab Shiite Muslims although Sunni Muslims control the government.

See, differences. One's fighting for their country (insurgent), one employs terror (terrorist) and one is a civilian (Iraqi). They are not all one in the same.