railroading vs maglev

railroading and maglev both are nouns.

Word	Noun	Adjective	Verb	Adverb
railroading	Yes	No	No	No
maglev	Yes	No	No	No

As nouns, maglev is a hyponym of railroading; that is, maglev is a word with a more specific, narrower meaning than railroading:

railroading: the activity of designing and constructing and operating railroads
maglev: high-speed rail technology; train is suspended on a magnetic cushion above a magnetized track and so travels free of friction

Other hyponyms of railroading include magnetic levitation.

railroading (noun)	maglev (noun)
the activity of designing and constructing and operating railroads	high-speed rail technology; train is suspended on a magnetic cushion above a magnetized track and so travels free of friction