run up vs hoard

run up is not a noun while hoard is a noun.

Word	Noun	Adjective	Verb	Adverb
run up	No	No	Yes	No
hoard	Yes	No	Yes	No

As verbs, hoard is a hypernym of run up; that is, hoard is a word with a broader meaning than run up:

Other hypernyms of run up include accumulate, amass, collect, compile, pile up, roll up.

run up (noun)	hoard (noun)
	a secret store of valuables or money

run up (verb)	hoard (verb)
pile up (debts or scores)	get or gather together
raise by using ropes and pulleys	save up as for future use
fasten by sewing; do needlework
make by sewing together quickly
accumulate, sometimes as a debt