Elevated railroad and Railway line

Elevated railroad noun - A railway that is powered by electricity and that runs on a track that is raised above the street level.

Railway line and elevated railroad are semantically related. In some cases you can use "Railway line" instead a noun phrase "Elevated railroad".

Railway line noun - Line that is the commercial organization responsible for operating a system of transportation for trains that pull passengers or freight.

Elevated railroad and railway line are semantically related. Sometimes you can replace phrase "Elevated railroad" with "Railway line", this phrases are similar.