alkaptonuria vs alcaptonuria

alkaptonuria and alcaptonuria both are nouns.

Word	Noun	Adjective	Verb	Adverb
alkaptonuria	Yes	No	No	No
alcaptonuria	Yes	No	No	No

As nouns, alkaptonuria and alcaptonuria are synonyms defined as:

alkaptonuria and alcaptonuria: a rare recessive metabolic anomaly marked by ochronosis and the presence of alkapton in the urine

alkaptonuria (noun)	alcaptonuria (noun)
a rare recessive metabolic anomaly marked by ochronosis and the presence of alkapton in the urine	a rare recessive metabolic anomaly marked by ochronosis and the presence of alkapton in the urine