trash heap vs scrapheap

trash heap and scrapheap both are nouns.

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

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

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

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

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