prevent vs rain out

prevent and rain out both are verbs.

Word	Noun	Adjective	Verb	Adverb
prevent	No	No	Yes	No
rain out	No	No	Yes	No

As verbs, rain out is a hyponym of prevent; that is, rain out is a word with a more specific, narrower meaning than prevent:

prevent: stop (someone or something) from doing something or being in a certain state
rain out: prevent or interrupt due to rain

prevent (verb)	rain out (verb)
stop (someone or something) from doing something or being in a certain state	prevent or interrupt due to rain
keep from happening or arising; make impossible