falcon vs hunt down

falcon is a noun but hunt down is not a noun.

Word	Noun	Adjective	Verb	Adverb
falcon	Yes	No	Yes	No
hunt down	No	No	Yes	No

As verbs, hunt down is a hypernym of falcon; that is, hunt down is a word with a broader meaning than falcon:

Other hypernyms of falcon include hunt, run, track down.

falcon (noun)	hunt down (noun)
diurnal birds of prey having long pointed powerful wings adapted for swift flight

falcon (verb)	hunt down (verb)
hunt with falcons	pursue for food or sport (as of wild animals)