This is the 2377th most frequent German word.
metall
Metal.
Here, 'Metall' is used as a material noun, referring to the substance metal in a general sense.
Ich mag das Geräusch von Metall, wenn es bearbeitet wird.
I like the sound of metal when it is being worked on.
In this sentence, 'Metall' describes the material composition of an object, indicating what it is made out of.
Das Fahrrad ist aus leichtem Metall gefertigt.
The bicycle is made of lightweight metal.
Here, 'Metalle' is plural and refers to various types of metallic elements or substances together as a category.