can vs send packing

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

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

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

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

can (noun)	send packing (noun)
airtight sealed metal container for food or drink or paint etc.
a room or building equipped with one or more toilets
a plumbing fixture for defecation and urination
the fleshy part of the human body that you sit on
a buoy with a round bottom and conical top
the quantity contained in a can

can (verb)	send packing (verb)
preserve in a can or tin	stop associating with
terminate the employment of; discharge from an office or position