aerial vs insubstantial

aerial is a noun but insubstantial is not a noun.

Word	Noun	Adjective	Verb	Adverb
aerial	Yes	Yes	No	No
insubstantial	No	Yes	No	No

aerial (noun)	insubstantial (noun)
a pass to a receiver downfield from the passer
an electrical device that sends or receives radio or television signals

aerial (adjective)	insubstantial (adjective)
existing or living or growing or operating in the air	lacking material form or substance; unreal
characterized by lightness and insubstantiality; as impalpable or intangible as air	lacking in nutritive value
	lacking solidity or strength