garbage heap vs rubbish heap

garbage heap and rubbish heap both are nouns.

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

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

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

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

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