elevated railroad vs elevated railway

elevated railroad and elevated railway both are nouns.

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

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

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

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

elevated railroad (noun)	elevated railway (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