shunter vs locomotive engine

shunter and locomotive engine both are nouns.

Word	Noun	Adjective	Verb	Adverb
shunter	Yes	No	No	No
locomotive engine	Yes	No	No	No

As nouns, locomotive engine is a hypernym of shunter; that is, locomotive engine is a word with a broader meaning than shunter:

shunter: a small locomotive used to move cars around but not to make trips
locomotive engine: a wheeled vehicle consisting of a self-propelled engine that is used to draw trains along railway tracks

Other hypernyms of shunter include engine, locomotive, railway locomotive.

shunter (noun)	locomotive engine (noun)
a small locomotive used to move cars around but not to make trips	a wheeled vehicle consisting of a self-propelled engine that is used to draw trains along railway tracks