monozygotic twin vs monozygous twin

monozygotic twin and monozygous twin both are nouns.

Word	Noun	Adjective	Verb	Adverb
monozygotic twin	Yes	No	No	No
monozygous twin	Yes	No	No	No

As nouns, monozygotic twin and monozygous twin are synonyms defined as:

monozygotic twin and monozygous twin: either of two twins developed from the same fertilized ovum (having the same genetic material)

Other synonyms of monozygotic twin include identical twin.

monozygotic twin (noun)	monozygous twin (noun)
either of two twins developed from the same fertilized ovum (having the same genetic material)	either of two twins developed from the same fertilized ovum (having the same genetic material)