chimney vs hearth

chimney and hearth both are nouns.

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

chimney (noun)	hearth (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	home symbolized as a part of the fireplace
a glass flue surrounding the wick of an oil lamp	an open recess in a wall at the base of a chimney where a fire can be built
	an area near a fireplace (usually paved and extending out into a room)