waste vs expend

waste is a noun but expend is not a noun.

Word	Noun	Adjective	Verb	Adverb
waste	Yes	Yes	Yes	No
expend	No	No	Yes	No

As verbs, expend is a hypernym of waste; that is, expend is a word with a broader meaning than waste:

Other hypernyms of waste include drop, spend.

As verbs, expend is a hypernym of waste; that is, expend is a word with a broader meaning than waste:

Other hypernyms of waste include consume, deplete, eat, eat up, exhaust, run through, use, use up, wipe out.

waste (noun)	expend (noun)
useless or profitless activity; using or expending or consuming thoughtlessly or carelessly
(law) reduction in the value of an estate caused by act or neglect
the trait of wasting resources
an uninhabited wilderness that is worthless for cultivation
any materials unused and rejected as worthless or unwanted

waste (adjective)	expend (adjective)
located in a dismal or remote area; desolate

waste (verb)	expend (verb)
become physically weaker	use up (resources or materials)
cause extensive destruction or ruin utterly	pay out
cause to grow thin or weak
lose vigor, health, or flesh, as through grief
spend extravagantly
use inefficiently or inappropriately
get rid of (someone who may be a threat) by killing
run off as waste
spend thoughtlessly; throw away
dispose of