...the qualifier would indicate the hashkey that returns the single required object rather than the whole set.

From the third quarter of the 18th century, there has been a steady accession of English words into Bengali, and through an intimate knowledge of the English language and English culture among the educated classes—and 'educated' is now almost synonymous with 'educated in English'—an unending stream of English words is now being admitted into Bengali; and the process was never more active than at the present moment: so that it is well-nigh impossible now to estimate the English element in Bengali, alike in its extent and in its phonology.

A similar confusion […] appears in the late Nhb. texts; […]

One must take care in handling negative zero in comparisons.