Gold and silver have been used as legal tender in the past.
endangered specie
Frequency:
60
%
Efforts are being made to protect the endangered specie of animals.
precious specie
Frequency:
50
%
The jeweler specializes in working with precious specie metals.
rare specie
Frequency:
45
%
The museum has a collection of rare specie coins.
Idiomatic Expressions for specie
Phrase: hard specie
Meaning: actual gold or silver coins, as opposed to paper money
Usage: The merchant only accepted payment in hard specie, not in paper currency.