interference vs impediment

interference and impediment both are nouns.

Word	Noun	Adjective	Verb	Adverb
interference	Yes	No	No	No
impediment	Yes	No	No	No

As nouns, impediment is a hypernym of interference; that is, impediment is a word with a broader meaning than interference:

Other hypernyms of interference include impedimenta, obstructer, obstruction, obstructor.

interference (noun)	impediment (noun)
the act of hindering or obstructing or impeding	any structure that makes progress difficult
(American football) blocking a player's path with your body	something immaterial that interferes with or delays action or progress
any obstruction that impedes or is burdensome
a policy of intervening in the affairs of other countries
electrical or acoustic activity that can disturb communication