engine room vs engineering

engine room and engineering both are nouns.

Word	Noun	Adjective	Verb	Adverb
engine room	Yes	No	No	No
engineering	Yes	No	No	No

As nouns, engine room and engineering are synonyms defined as:

engine room and engineering: a room (as on a ship) in which the engine is located

engine room (noun)	engineering (noun)
a room (as on a ship) in which the engine is located	the practical application of technical and scientific knowledge to commerce or industry
	a room (as on a ship) in which the engine is located
	the discipline dealing with the art or science of applying scientific knowledge to practical problems