hexadecanoic acid vs palmitic acid

hexadecanoic acid and palmitic acid both are nouns.

Word	Noun	Adjective	Verb	Adverb
hexadecanoic acid	Yes	No	No	No
palmitic acid	Yes	No	No	No

As nouns, hexadecanoic acid and palmitic acid are synonyms defined as:

hexadecanoic acid and palmitic acid: a saturated fatty acid that is the major fat in meat and dairy products

hexadecanoic acid (noun)	palmitic acid (noun)
a saturated fatty acid that is the major fat in meat and dairy products	a saturated fatty acid that is the major fat in meat and dairy products