impeachment vs legal instrument

impeachment and legal instrument both are nouns.

Word	Noun	Adjective	Verb	Adverb
impeachment	Yes	No	No	No
legal instrument	Yes	No	No	No

As nouns, legal instrument is a hypernym of impeachment; that is, legal instrument is a word with a broader meaning than impeachment:

impeachment: a formal document charging a public official with misconduct in office
legal instrument: (law) a document that states some contractual relationship or grants some right

Other hypernyms of impeachment include instrument, legal document, official document.

impeachment (noun)	legal instrument (noun)
a formal document charging a public official with misconduct in office	(law) a document that states some contractual relationship or grants some right