wads vs piles

wads and piles both are nouns.

Word	Noun	Adjective	Verb	Adverb
wads	Yes	No	No	No
piles	Yes	No	No	No

As nouns, wads and piles are synonyms defined as:

Other synonyms of wads include dozens, gobs, heaps, lashings, loads, lots, oodles, rafts, scads, scores, slews, stacks, tons.

wads (noun)	piles (noun)
a large number or amount	a large number or amount
	venous swelling external or internal to the anal sphincter