During a grammar lesson, an English teacher corrected...

During a grammar lesson, an English teacher corrected recurring errors in students' written compositions, explaining that certain English nouns — among them information, furniture, advice, equipment and news — are systematically misused by Brazilian learners who add plural inflections or precede them with the indefinite article, mirroring patterns from Portuguese. She clarified that these nouns have no plural form, cannot be counted directly, and require expressions such as "a piece of" when quantity must be specified. These nouns belong to the grammatical category of: