acetaldol vs aldehyde-alcohol

acetaldol and aldehyde-alcohol both are nouns.

Word	Noun	Adjective	Verb	Adverb
acetaldol	Yes	No	No	No
aldehyde-alcohol	Yes	No	No	No

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

acetaldol: unsaturated aldol
aldehyde-alcohol: an oily colorless liquid obtained by the condensation of two molecules of acetaldehyde; contains an alcohol group (-OH) and an aldehyde group (-CHO)

Other hypernyms of acetaldol include aldol.

acetaldol (noun)	aldehyde-alcohol (noun)
unsaturated aldol	an oily colorless liquid obtained by the condensation of two molecules of acetaldehyde; contains an alcohol group (-OH) and an aldehyde group (-CHO)