donkey engine vs engine

donkey engine and engine both are nouns.

Word	Noun	Adjective	Verb	Adverb
donkey engine	Yes	No	No	No
engine	Yes	No	No	No

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

donkey engine: (nautical) a small engine (as one used on board ships to operate a windlass)
engine: motor that converts thermal energy to mechanical work

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

donkey engine: a locomotive for switching rolling stock in a railroad yard
engine: a wheeled vehicle consisting of a self-propelled engine that is used to draw trains along railway tracks

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

donkey engine (noun)	engine (noun)
(nautical) a small engine (as one used on board ships to operate a windlass)	motor that converts thermal energy to mechanical work
a locomotive for switching rolling stock in a railroad yard	a wheeled vehicle consisting of a self-propelled engine that is used to draw trains along railway tracks
	an instrument or machine that is used in warfare, such as a battering ram, catapult, artillery piece, etc.
	something used to achieve a purpose