I agree, but "we" (western media, etc.) tended to call attacks on the occupation forces terrorism, too. The pretense was the war was "over", so the occupation forces were there for law and order, not war, so attacks on them were criminal/terrorist/etc. vs. "legitimate warfare".

Pressure/etc. detonated IEDs are sort of a grey area, honestly, as are military landmines, cluster munitions where you know a large fraction will become UXO, especially in civilian areas, and inaccurate area attacks like WW2 airstrikes.