sidetrack vs railroad track

sidetrack and railroad track both are nouns.

Word	Noun	Adjective	Verb	Adverb
sidetrack	Yes	No	Yes	No
railroad track	Yes	No	No	No

As nouns, railroad track is a hypernym of sidetrack; that is, railroad track is a word with a broader meaning than sidetrack:

sidetrack: a short stretch of railroad track used to store rolling stock or enable trains on the same line to pass
railroad track: a line of track providing a runway for wheels

Other hypernyms of sidetrack include railroad, railway.

sidetrack (noun)	railroad track (noun)
a short stretch of railroad track used to store rolling stock or enable trains on the same line to pass	a line of track providing a runway for wheels

sidetrack (verb)	railroad track (verb)
wander from a direct or straight course