raceway vs velodrome

raceway and velodrome both are nouns.

Word	Noun	Adjective	Verb	Adverb
raceway	Yes	No	No	No
velodrome	Yes	No	No	No

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

Other hyponyms of raceway include cinder track, dirt track, circuit, racing circuit, speedway.

raceway (noun)	velodrome (noun)
a canal for a current of water	a banked oval track for bicycle or motorcycle racing
a course over which races are run