hunt down vs falcon

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

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

As verbs, falcon is a hyponym of hunt down; that is, falcon is a word with a more specific, narrower meaning than hunt down:

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

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