ethereal vs aery

ethereal is not a noun while aery is a noun.

Word	Noun	Adjective	Verb	Adverb
ethereal	No	Yes	No	No
aery	Yes	Yes	No	No

As adjectives, ethereal and aery are synonyms defined as:

ethereal and aery: characterized by lightness and insubstantiality; as impalpable or intangible as air

Other synonyms of ethereal include aerial, aeriform, airy.

ethereal (noun)	aery (noun)
	any habitation at a high altitude
	the lofty nest of a bird of prey (such as a hawk or eagle)

ethereal (adjective)	aery (adjective)
of or containing or dissolved in ether	characterized by lightness and insubstantiality; as impalpable or intangible as air
characterized by unusual lightness and delicacy
of heaven or the spirit
characterized by lightness and insubstantiality; as impalpable or intangible as air