gossamer vs ethereal

gossamer is a noun but ethereal is not a noun.

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

As adjectives, gossamer and ethereal are synonyms defined as:

gossamer (noun)	ethereal (noun)
a gauze fabric with an extremely fine texture
filaments from a web that was spun by a spider

gossamer (adjective)	ethereal (adjective)
characterized by unusual lightness and delicacy	of or containing or dissolved in ether
so thin as to transmit light	characterized by unusual lightness and delicacy
	of heaven or the spirit
	characterized by lightness and insubstantiality; as impalpable or intangible as air