Jalopy and Sedan

Jalopy noun - A dilapidated old automobile.

Sedan and jalopy are semantically related In some cases you can use "Sedan" instead a noun "Jalopy".

Sedan noun - A car that is closed and that has front and rear seats and two or four doors.

Jalopy and sedan are semantically related in car topic. You can use "Jalopy" instead a noun "Sedan", if it concerns topics such as vehicle driven on streets.