trash pile vs trash heap

trash pile and trash heap both are nouns.

Word	Noun	Adjective	Verb	Adverb
trash pile	Yes	No	No	No
trash heap	Yes	No	No	No

As nouns, trash pile and trash heap are synonyms defined as:

trash pile and trash heap: an accumulation of refuse and discarded matter

Other synonyms of trash pile include garbage heap, junk heap, junk pile, refuse heap, rubbish heap, scrapheap.

trash pile (noun)	trash heap (noun)
an accumulation of refuse and discarded matter	an accumulation of refuse and discarded matter