walk out vs desert

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

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

As verbs, desert is a hypernym of walk out; that is, desert is a word with a broader meaning than walk out:

Other hypernyms of walk out include abandon, desolate, forsake.

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

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