Islamic terrorism is terrorism with motivations derived from Islamic literature. For example, when civilians are murdered as punishment for committing acts deemed wrong by Muslim extremists.
Although most terrorism in 2020 globally has been Islamic terrorism, some analysts consider some — and perhaps all — Islamic terrorism to be motivated by other reasons, such as foreign invasion and the Israel-Palestine conflict.
Islamist terrorism is terrorism committed in order to spread Islam. For example the mass murder and displacement of non-muslims and the spreading of Islam by acts of violence.