side effect vs effect

side effect and effect both are nouns.

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

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

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

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

side effect (noun)	effect (noun)
any adverse and unwanted secondary effect	an outward appearance
a secondary and usually adverse effect of a drug or therapy	(of a law) having legal validity
	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

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