The term 'cloverleaf parts' refers to the components of a cloverleaf interchange, which is a type of highway interchange that allows for smoother traffic flow. The four parts of a cloverleaf interchange are ramps (5 letters), roads (5 letters), exits (5 letters), and onramps (7 letters). Ramps are curved sections of road that connect two highways at different levels. Roads are the main highways that intersect at the cloverleaf interchange. Exits are the points where drivers can leave the highway and enter the cloverleaf interchange. Onramps are the points where drivers can enter the highway from the cloverleaf interchange.