Answers

2016-01-15T19:33:37+05:30
the ​system of ​transport that uses ​trains , one of the two ​metal ​bars ​attached to the ​ground on which ​trains ​travel is called as rail 

a ​railway ​engine ​connected to​ carriages for ​carryingpeople or to ​wheeled ​containers for ​carrying ​goods is called train
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it's correct I am also like to give the same answr