loads vs piles

loads and piles both are nouns.

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

As nouns, loads and piles are synonyms defined as:

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

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