backwash vs effect

backwash and effect both are nouns.

Word	Noun	Adjective	Verb	Adverb
backwash	Yes	No	No	No
effect	Yes	No	Yes	No

As nouns, effect is a hypernym of backwash; that is, effect is a word with a broader meaning than backwash:

Other hypernyms of backwash include consequence, event, issue, outcome, result, upshot.

backwash (noun)	effect (noun)
the wave that spreads behind a boat as it moves forward	an outward appearance
the flow of air that is driven backwards by an aircraft propeller	(of a law) having legal validity
the consequences of an event (especially a catastrophic event)	an impression (especially one that is artificial or contrived)
	the central meaning or theme of a speech or literary work
	a phenomenon that follows and is caused by some previous phenomenon
	a symptom caused by an illness or a drug

backwash (verb)	effect (verb)
	produce
	act so as to bring into existence