fire vs send packing

fire is a noun but send packing is not a noun.

Word	Noun	Adjective	Verb	Adverb
fire	Yes	No	Yes	No
send packing	No	No	Yes	No

As verbs, send packing is a hyponym of fire; that is, send packing is a word with a more specific, narrower meaning than fire:

Other hyponyms of fire include retire, pension off, clean out, furlough, lay off, squeeze out, dismiss, drop, send away.

fire (noun)	send packing (noun)
the act of firing weapons or artillery at an enemy
a fireplace in which a relatively small fire is burning
intense adverse criticism
the event of something burning (often destructive)
a severe trial
feelings of great warmth and intensity
the process of combustion of inflammable materials producing heat and light and (often) smoke
fuel that is burning and is used as a means for cooking
once thought to be one of four elements composing the universe (Empedocles), associated with the humour bile

fire (verb)	send packing (verb)
bake in a kiln so as to harden	stop associating with
destroy by fire
start or maintain a fire in
become ignited
cause to go off
start firing a weapon
go off or discharge
generate an electrical impulse
call forth (emotions, feelings, and responses)
drive out or away by or as if by fire
provide with fuel
terminate the employment of; discharge from an office or position