elevated railway vs elevated railroad

elevated railway and elevated railroad both are nouns.

Word	Noun	Adjective	Verb	Adverb
elevated railway	Yes	No	No	No
elevated railroad	Yes	No	No	No

As nouns, elevated railway and elevated railroad are synonyms defined as:

elevated railway and elevated railroad: a railway that is powered by electricity and that runs on a track that is raised above the street level

Other synonyms of elevated railway include el, elevated, overhead railway.

elevated railway (noun)	elevated railroad (noun)
a railway that is powered by electricity and that runs on a track that is raised above the street level	a railway that is powered by electricity and that runs on a track that is raised above the street level