Debates over the origins of racism often suffer from a lack of clarity over the term. Many use the term "racism" to refer to more general phenomena, such as xenophobia and ethnocentrism, although scholars attempt to clearly distinguish those phenomena from racism as an ideology or from scientific racism, which has little to do with ordinary xenophobia. Others conflate recent forms of racism with earlier forms of ethnic and national conflict. In most cases, ethno-national conflict seems to owe itself to conflict over land and strategic resources. In some cases, ethnicity and nationalism were harnessed in order to rally combatants in wars between great religious empires (for example, the Muslim Turks and the Catholic Austro-Hungarians).