ethanal vs aldehyde

ethanal and aldehyde both are nouns.

Word	Noun	Adjective	Verb	Adverb
ethanal	Yes	No	No	No
aldehyde	Yes	No	No	No

As nouns, aldehyde is a hypernym of ethanal; that is, aldehyde is a word with a broader meaning than ethanal:

ethanal: a colorless volatile water-soluble liquid aldehyde used chiefly in the manufacture of acetic acid and perfumes and drugs
aldehyde: any of a class of highly reactive chemical compounds; used in making resins and dyes and organic acids

ethanal (noun)	aldehyde (noun)
a colorless volatile water-soluble liquid aldehyde used chiefly in the manufacture of acetic acid and perfumes and drugs	any of a class of highly reactive chemical compounds; used in making resins and dyes and organic acids