garbage heap vs scrapheap

garbage heap and scrapheap both are nouns.

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

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

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

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

garbage heap (noun)	scrapheap (noun)
an accumulation of refuse and discarded matter	pile of discarded metal
	an accumulation of refuse and discarded matter