slew vs plenty

slew and plenty both are nouns.

Word	Noun	Adjective	Verb	Adverb
slew	Yes	No	Yes	No
plenty	Yes	No	No	Yes

As nouns, slew and plenty are synonyms defined as:

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

slew (noun)	plenty (noun)
(often followed by `of') a large number or amount or extent	a full supply
	(often followed by `of') a large number or amount or extent

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

slew (adverb)	plenty (adverb)
	as much as necessary