desert vs walk out

desert is a noun but walk out is not a noun.

Word	Noun	Adjective	Verb	Adverb
desert	Yes	No	Yes	No
walk out	No	No	Yes	No

As verbs, walk out is a hyponym of desert; that is, walk out is a word with a more specific, narrower meaning than desert:

Other hyponyms of desert include expose, ditch, maroon, strand.

desert (noun)	walk out (noun)
arid land with little or no vegetation
(usually plural) a person's deservingness of or entitlement to reward or punishment

desert (verb)	walk out (verb)
leave someone who needs or counts on you; leave in the lurch	leave suddenly, often as an expression of disapproval
leave behind	leave abruptly, often in protest or anger
desert (a cause, a country or an army), often in order to join the opposing cause, country, or army	stop work in order to press demands