railroading vs rail technology

railroading and rail technology both are nouns.

Word	Noun	Adjective	Verb	Adverb
railroading	Yes	No	No	No
rail technology	Yes	No	No	No

As nouns, railroading and rail technology are synonyms defined as:

railroading and rail technology: the activity of designing and constructing and operating railroads

railroading (noun)	rail technology (noun)
the activity of designing and constructing and operating railroads	the activity of designing and constructing and operating railroads