ethereal vs aeriform

ethereal and aeriform both are adjectives.

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

As adjectives, ethereal and aeriform are synonyms defined as:

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

Other synonyms of ethereal include aerial, aery, airy.

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