interquartile range vs midspread

interquartile range and midspread both are nouns.

Word	Noun	Adjective	Verb	Adverb
interquartile range	Yes	No	No	No
midspread	Yes	No	No	No

As nouns, interquartile range and midspread are synonyms defined as:

interquartile range and midspread: a measure of statistical dispersion, being equal to the difference between the upper and lower quartiles.

Other synonyms of interquartile range include middle fifty.

interquartile range (noun)	midspread (noun)
a measure of statistical dispersion, being equal to the difference between the upper and lower quartiles.	a measure of statistical dispersion, being equal to the difference between the upper and lower quartiles.