wrecker vs waster

wrecker and waster both are nouns.

Word	Noun	Adjective	Verb	Adverb
wrecker	Yes	No	No	No
waster	Yes	No	No	No

As nouns, waster is a hypernym of wrecker; that is, waster is a word with a broader meaning than wrecker:

Other hypernyms of wrecker include destroyer, ruiner, undoer, uprooter.

wrecker (noun)	waster (noun)
a truck equipped to hoist and pull wrecked cars (or to remove cars from no-parking zones)	someone who dissipates resources self-indulgently
someone who commits sabotage or deliberately causes wrecks	a person who destroys or ruins or lays waste to
someone who demolishes or dismantles buildings as a job