The 6 Lexington Avenue Local and Pelham Bay Park Express [3] are two rapid transit services in the A Division of the New York City Subway. Their route emblems, or "bullets", are colored forest green since they use the IRT Lexington Avenue Line in Manhattan. [4] Local service is denoted by a (6) in a circular bullet, and express service is
Key Difference: A rail is a set of two parallel rows of long pieces of steel or iron. A train is a mode of transportation that runs on these laid tracks of rails and is generally used for long distances; a train usually runs outside city limits. The difference between rail and train seems to be confusing as rail and trains are used in same context.
You may transfer between buses and trams (for a timed period of 90 mins) with the same 'TICKET T' purchased individually or in CARNETs (packets of 10 reduced-priced , individual 'TICKET T's'. You may transfer between different Metro and RER train lignes, within Correspondance stations on a TICKET t. 4saa.