average deviation vs average absolute deviation

average deviation and average absolute deviation both are nouns.

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

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

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

average deviation (noun)	average absolute 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.