scrapheap vs trash pile

scrapheap and trash pile both are nouns.

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

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

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

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

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