trip vs fall out

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

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

trip (noun)	fall out (noun)
a journey for some purpose (usually including the return)
an unintentional but embarrassing blunder
a light or nimble tread
a catch mechanism that acts as a switch
an accidental misstep threatening (or causing) a fall
an exciting or stimulating experience
a hallucinatory experience induced by drugs

trip (verb)	fall out (verb)
get high, stoned, or drugged	come to pass
put in motion or move to act	have a breach in relations
miss a step and fall or nearly fall	drop out
cause to stumble	leave (a barracks) in order to take a place in a military formation, or leave a military formation
make a trip for pleasure	come as a logical consequence; follow logically