Conversation so far:
whats the difference between a train and a tram
Trains and trams appear to be similar; however, each is different from the other, starting from the mode of power they use to the length and weight.
Which of the two train or tram was invented first
The first steam locomotive was built by Richard Trevithick and Andrew Vivian in Wales and later tested in America on the Baltimore & Ohio Railroad in 1829.
Which of the two is better, the train or the tram
Trains move people quickly over long distances.Trams are more flexible than trains, they stop more often, and they are faster than the busses. Trams travel shorter distances than trains.

Question: What are the two made of
Self-contained rewrite: What are the trains and trams made of