Translation is the communication of the meaning of a source-language text by means of an equivalent target-language text. wikipedia.org

Subtitles are textual versions of the dialog in films and television programs, usually displayed at the bottom of the screen. They can either be a form of written translation of a dialog in a foreign language, or a written rendering of the dialog in the same language, with or without added wikipedia.org

Proofreading (also proof-reading) is the reading of a galley proof or computer monitor to detect and correct production-errors of text or art. Proofreaders are expected to be consistently accurate by default because they occupy the last stage of typographic production before publication. wikipedia.org

English is a West Germanic language that was first spoken in early medieval England and is now a global lingua franca. wikipedia.org

Bengali or Bangla is the language native to the region of Bengal, which comprises present-day Bangladesh and the Indian states West Bengal, Tripura and southern Assam. It is written using the Bengali script. wikipedia.org

Medical transcription, also known as MT, is an allied health profession, which deals in the process of transcription, or converting voice-recorded reports as dictated by physicians and/or other healthcare professionals, into text format. wikipedia.org

Translation from English to Bengali and Bengali to English.

Mathematics is the abstract study of topics encompassing quantity, structure, space, change, and other properties. wikipedia.org

Translation from English to Hindi and Hindi to English.

A transcription service is a business which converts speech (either live or recorded) into a written or electronic text document. Transcription services are often provided for business, legal, or medical purposes. wikipedia.org