intervention vs foreign policy

intervention and foreign policy both are nouns.

Word	Noun	Adjective	Verb	Adverb
intervention	Yes	No	No	No
foreign policy	Yes	No	No	No

As nouns, foreign policy is a hypernym of intervention; that is, foreign policy is a word with a broader meaning than intervention:

intervention (noun)	foreign policy (noun)
the act of intervening (as to mediate a dispute, etc.)	a policy governing international relations
(law) a proceeding that permits a person to enter into a lawsuit already in progress; admission of person not an original party to the suit so that person can protect some right or interest that is allegedly affected by the proceedings
care provided to improve a situation (especially medical procedures or applications that are intended to relieve illness or injury)
the act or fact of interposing one thing between or among others
a policy of intervening in the affairs of other countries