The term 'world conflict' can be defined as a global dispute or war. However, several other phrases and terms could be used as synonyms for this term. 'International crisis' is one such term that can be used to describe a widespread tension among different countries or nations. Another synonym could be 'global turmoil,' which signifies a state of unrest across the world. 'Planetary clash' is yet another phrase that could be used to denote a conflict between multiple nations or regions. Lastly, phrases such as 'world war,' 'global battle,' or 'international dispute' are prominent synonyms for the term 'world conflict.