chromosomal anomaly vs chrosomal abnormality

chromosomal anomaly and chrosomal abnormality both are nouns.

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

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

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

Other synonyms of chromosomal anomaly include chromosomal aberration, chromosonal disorder.

chromosomal anomaly (noun)	chrosomal abnormality (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