refuse heap vs trash pile

refuse heap and trash pile both are nouns.

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

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

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

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

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