term of enlistment vs duty tour

term of enlistment and duty tour both are nouns.

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

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

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

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

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