law officer vs defender

law officer and defender both are nouns.

Word	Noun	Adjective	Verb	Adverb
law officer	Yes	No	No	No
defender	Yes	No	No	No

As nouns, defender is a hypernym of law officer; that is, defender is a word with a broader meaning than law officer:

Other hypernyms of law officer include guardian, protector, shielder.

law officer (noun)	defender (noun)
an officer of the law	a person who cares for persons or property
	a fighter who holds out against attack