monosomy vs chromosomal anomaly

monosomy and chromosomal anomaly both are nouns.

Word	Noun	Adjective	Verb	Adverb
monosomy	Yes	No	No	No
chromosomal anomaly	Yes	No	No	No

As nouns, chromosomal anomaly is a hypernym of monosomy; that is, chromosomal anomaly is a word with a broader meaning than monosomy:

monosomy: chromosomal abnormality consisting of the absence of one chromosome from the normal diploid number
chromosomal anomaly: any change in the normal structure or number of chromosomes; often results in physical or mental abnormalities

Other hypernyms of monosomy include chromosomal aberration, chromosonal disorder, chrosomal abnormality.

monosomy (noun)	chromosomal anomaly (noun)
chromosomal abnormality consisting of the absence of one chromosome from the normal diploid number	any change in the normal structure or number of chromosomes; often results in physical or mental abnormalities