rubbish heap vs refuse heap

rubbish heap and refuse heap both are nouns.

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

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

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

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

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