chrosomal abnormality vs chromosomal aberration

chrosomal abnormality and chromosomal aberration both are nouns.

Word	Noun	Adjective	Verb	Adverb
chrosomal abnormality	Yes	No	No	No
chromosomal aberration	Yes	No	No	No

As nouns, chrosomal abnormality and chromosomal aberration are synonyms defined as:

chrosomal abnormality and chromosomal aberration: any change in the normal structure or number of chromosomes; often results in physical or mental abnormalities

Other synonyms of chrosomal abnormality include chromosomal anomaly, chromosonal disorder.

chrosomal abnormality (noun)	chromosomal aberration (noun)
any change in the normal structure or number of chromosomes; often results in physical or mental abnormalities	any change in the normal structure or number of chromosomes; often results in physical or mental abnormalities