rafts vs piles

rafts and piles both are nouns.

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

As nouns, rafts and piles are synonyms defined as:

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

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