anomalousness vs anomaly

anomalousness and anomaly both are nouns.

Word	Noun	Adjective	Verb	Adverb
anomalousness	Yes	No	No	No
anomaly	Yes	No	No	No

As nouns, anomalousness and anomaly are synonyms defined as:

anomalousness and anomaly: deviation from the normal or common order or form or rule

anomalousness (noun)	anomaly (noun)
deviation from the normal or common order or form or rule	(astronomy) position of a planet as defined by its angular distance from its perihelion (as observed from the sun)
	a person who is unusual
	deviation from the normal or common order or form or rule