chimney vs lamp chimney

chimney and lamp chimney both are nouns.

Word	Noun	Adjective	Verb	Adverb
chimney	Yes	No	No	No
lamp chimney	Yes	No	No	No

As nouns, chimney and lamp chimney are synonyms defined as:

chimney and lamp chimney: a glass flue surrounding the wick of an oil lamp

chimney (noun)	lamp chimney (noun)
a vertical flue that provides a path through which smoke from a fire is carried away through the wall or roof of a building	a glass flue surrounding the wick of an oil lamp
a glass flue surrounding the wick of an oil lamp