rubbish heap vs dump

rubbish heap and dump both are nouns.

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

As nouns, dump is a hypernym of rubbish heap; that is, dump is a word with a broader meaning than rubbish heap:

Other hypernyms of rubbish heap include dumpsite, garbage dump, rubbish dump, trash dump, waste-yard, wasteyard.

rubbish heap (noun)	dump (noun)
an accumulation of refuse and discarded matter	a place where supplies can be stored
	(computer science) a copy of the contents of a computer storage device; sometimes used in debugging programs
	a piece of land where waste materials are dumped
	a coarse term for defecation

rubbish heap (verb)	dump (verb)
	knock down with force
	drop (stuff) in a heap or mass
	fall abruptly
	throw away as refuse
	sell at artificially low prices
	sever all ties with, usually unceremoniously or irresponsibly