Hard cash and Lucre

Hard cash noun - Money in the form of bills or coins.

Lucre and hard cash are semantically related In some cases you can use "Lucre" instead a noun phrase "Hard cash".

Lucre noun - Something (as pieces of stamped metal or printed paper) customarily and legally used as a medium of exchange, a measure of value, or a means of payment.

Hard cash and lucre are semantically related in money topic. You can use "Hard cash" instead a noun "Lucre".