Quick Quiz: Nouns Score: Change category, Flip order Reset Incorrect! Try again. Noun: einstein Your choice? deciduous shrubby tree of Europe and western Asia having gray leaves and small yellow fruits covered in silvery scales; sometimes spiny physicist who formulated the special theory of relativity and the general theory of relativity (1879-1955) North American rat snakes   (Noun: elaphe) potential energy that is stored when a body is deformed (as in a coiled spring)