Cucumber and Greenback

Cucumber noun - A melon vine of the genus Cucumis; cultivated from earliest times for its cylindrical green fruit.

Greenback and cucumber are semantically related. in paper money topic. In some cases you can use "Greenback" instead a noun "Cucumber".

Greenback noun - A piece of printed paper used as money in the United States.

Cucumber and greenback are semantically related. You can use "Cucumber" instead a noun "Greenback".