trash heap vs garbage heap

trash heap and garbage heap both are nouns.

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

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

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

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

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