junk pile vs refuse heap

junk pile and refuse heap both are nouns.

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

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

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

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

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