average absolute deviation vs average deviation

average absolute deviation and average deviation both are nouns.

Word	Noun	Adjective	Verb	Adverb
average absolute deviation	Yes	No	No	No
average deviation	Yes	No	No	No

As nouns, average absolute deviation and average deviation are synonyms defined as:

average absolute deviation and average deviation: the average of the absolute deviations from a central point and a summary statistic of statistical dispersion or variability.

average absolute deviation (noun)	average deviation (noun)
the average of the absolute deviations from a central point and a summary statistic of statistical dispersion or variability.	the average of the absolute deviations from a central point and a summary statistic of statistical dispersion or variability.