Compound nouns are used in German to translate items such as a "five euro note" or a "two cent piece". Such nouns begin with a capital letter and their gender is determined by the final element of the compound noun. (Click on the sound icon to hear these nouns being spoken.)
The German word for a banknote is der Schein (-e) and the word for a coin is die Münze (-n). When describing specific denominations of coin however, das Stück (-e) is used in German compound nouns instead of "die Münze". It literally means "piece" in the same way as the English "twenty pence piece".