locomotive vs railway locomotive

locomotive and railway locomotive both are nouns.

Word	Noun	Adjective	Verb	Adverb
locomotive	Yes	Yes	No	No
railway locomotive	Yes	No	No	No

As nouns, locomotive and railway locomotive are synonyms defined as:

locomotive and railway locomotive: a wheeled vehicle consisting of a self-propelled engine that is used to draw trains along railway tracks

Other synonyms of locomotive include engine, locomotive engine.

locomotive (noun)	railway locomotive (noun)
a wheeled vehicle consisting of a self-propelled engine that is used to draw trains along railway tracks	a wheeled vehicle consisting of a self-propelled engine that is used to draw trains along railway tracks

locomotive (adjective)	railway locomotive (adjective)
of or relating to locomotion