tidy sum vs slew

tidy sum and slew both are nouns.

Word	Noun	Adjective	Verb	Adverb
tidy sum	Yes	No	No	No
slew	Yes	No	Yes	No

As nouns, tidy sum and slew are synonyms defined as:

tidy sum and slew: (often followed by `of') a large number or amount or extent

tidy sum (noun)	slew (noun)
(often followed by `of') a large number or amount or extent	(often followed by `of') a large number or amount or extent

tidy sum (verb)	slew (verb)
	turn sharply; change direction abruptly
	move obliquely or sideways, usually in an uncontrolled manner