passel vs heap

passel and heap both are nouns.

Word	Noun	Adjective	Verb	Adverb
passel	Yes	No	No	No
heap	Yes	No	Yes	No

As nouns, passel and heap are synonyms defined as:

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

passel (noun)	heap (noun)
(often followed by `of') a large number or amount or extent	a car that is old and unreliable
	a collection of objects laid on top of each other
	(often followed by `of') a large number or amount or extent