junk heap vs refuse heap

junk heap and refuse heap both are nouns.

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

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

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

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

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