atmosphere vs miasma

atmosphere and miasma both are nouns.

Word	Noun	Adjective	Verb	Adverb
atmosphere	Yes	No	No	No
miasma	Yes	No	No	No

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

Other hyponyms of atmosphere include genius loci, gloom, gloominess, glumness, miasm, feel, feeling, flavor, flavour, look, smell, spirit, tone, headiness.

atmosphere (noun)	miasma (noun)
a distinctive but intangible quality surrounding a person or thing	unhealthy vapors rising from the ground or other sources
the mass of air surrounding the Earth	an unwholesome atmosphere
the envelope of gases surrounding any celestial body
a unit of pressure: the pressure that will support a column of mercury 760 mm high at sea level and 0 degrees centigrade
the weather or climate at some place
a particular environment or surrounding influence