homogentisic acid vs alkapton

homogentisic acid and alkapton both are nouns.

Word	Noun	Adjective	Verb	Adverb
homogentisic acid	Yes	No	No	No
alkapton	Yes	No	No	No

As nouns, homogentisic acid and alkapton are synonyms defined as:

homogentisic acid and alkapton: an acid formed as an intermediate product of the metabolism of tyrosine and phenylalanine

Other synonyms of homogentisic acid include alcapton.

homogentisic acid (noun)	alkapton (noun)
an acid formed as an intermediate product of the metabolism of tyrosine and phenylalanine	an acid formed as an intermediate product of the metabolism of tyrosine and phenylalanine