wood vinegar vs pyroligneous acid

wood vinegar and pyroligneous acid both are nouns.

Word	Noun	Adjective	Verb	Adverb
wood vinegar	Yes	No	No	No
pyroligneous acid	Yes	No	No	No

As nouns, wood vinegar and pyroligneous acid are synonyms defined as:

wood vinegar and pyroligneous acid: a red-brown liquid formed in distillation of wood which contains acetic acid, methanol, acetone, wood oils, and tars

wood vinegar (noun)	pyroligneous acid (noun)
a red-brown liquid formed in distillation of wood which contains acetic acid, methanol, acetone, wood oils, and tars	a red-brown liquid formed in distillation of wood which contains acetic acid, methanol, acetone, wood oils, and tars