slew vs large indefinite amount

slew and large indefinite amount both are nouns.

Word	Noun	Adjective	Verb	Adverb
slew	Yes	No	Yes	No
large indefinite amount	Yes	No	No	No

As nouns, large indefinite amount is a hypernym of slew; that is, large indefinite amount is a word with a broader meaning than slew:

slew: (often followed by `of') a large number or amount or extent
large indefinite amount: an indefinite quantity that is above the average in size or magnitude

Other hypernyms of slew include large indefinite quantity.

slew (noun)	large indefinite amount (noun)
(often followed by `of') a large number or amount or extent	an indefinite quantity that is above the average in size or magnitude

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