trash pile vs refuse heap

trash pile and refuse heap both are nouns.

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

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

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

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

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