Asked in Nouns

Is rubber a countable or uncountable noun?



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The noun 'rubber' is an uncountable noun as a word for a substance.

Units of an uncountable (mass) noun for a substance is expressed by amounts or measures called partitive nouns, for example, a ton of rubber or shipment of rubber.

The noun 'rubber' is a countable noun as a word for a type of footwear, a condom, or a pencil eraser. The plural noun is 'rubbers'.