desertion vs desert

desertion and desert both are nouns.

Word	Noun	Adjective	Verb	Adverb
desertion	Yes	No	No	No
desert	Yes	No	Yes	No

desertion (noun)	desert (noun)
withdrawing support or help despite allegiance or responsibility	arid land with little or no vegetation
the act of giving something up	(usually plural) a person's deservingness of or entitlement to reward or punishment

desertion (verb)	desert (verb)
	leave someone who needs or counts on you; leave in the lurch
	leave behind
	desert (a cause, a country or an army), often in order to join the opposing cause, country, or army