duty tour vs term of enlistment

duty tour and term of enlistment both are nouns.

Word	Noun	Adjective	Verb	Adverb
duty tour	Yes	No	No	No
term of enlistment	Yes	No	No	No

As nouns, duty tour and term of enlistment are synonyms defined as:

duty tour and term of enlistment: a period of time spent in military service

Other synonyms of duty tour include enlistment, hitch, tour, tour of duty.

duty tour (noun)	term of enlistment (noun)
a period of time spent in military service	a period of time spent in military service