good deal vs slew

good deal and slew both are nouns.

Word	Noun	Adjective	Verb	Adverb
good deal	Yes	No	No	No
slew	Yes	No	Yes	No

As nouns, good deal and slew are synonyms defined as:

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

good deal (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

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