recess vs fireplace

recess and fireplace both are nouns.

Word	Noun	Adjective	Verb	Adverb
recess	Yes	No	Yes	No
fireplace	Yes	No	No	No

As nouns, fireplace is a hyponym of recess; that is, fireplace is a word with a more specific, narrower meaning than recess:

recess: an enclosure that is set back or indented
fireplace: an open recess in a wall at the base of a chimney where a fire can be built

Other hyponyms of recess include alcove, bay, apse, apsis, cinerarium, columbarium, hearth, open fireplace, mihrab.

recess (noun)	fireplace (noun)
a pause from doing something (as work)	an open recess in a wall at the base of a chimney where a fire can be built
an enclosure that is set back or indented
an arm off of a larger body of water (often between rocky headlands)
a small concavity
a state of abeyance or suspended business