Words of logic are phrases or statements that are based on logical reasoning and are used to explain a concept or idea. The term ORS is an acronym for 'Order, Relation, and Syllogism, ' which are three types of logical reasoning. Order is the arrangement of ideas in a logical sequence, relation is the comparison of two or more ideas, and syllogism is a form of logical argument. Together, these three types of logical reasoning form the basis of words of logic.