effect vs fall out

effect is a noun but fall out is not a noun.

Word	Noun	Adjective	Verb	Adverb
effect	Yes	No	Yes	No
fall out	No	No	Yes	No

effect (noun)	fall out (noun)
an outward appearance
(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

effect (verb)	fall out (verb)
produce	come to pass
act so as to bring into existence	have a breach in relations
	drop out
	leave (a barracks) in order to take a place in a military formation, or leave a military formation
	come as a logical consequence; follow logically