international mile vs land mile

international mile and land mile both are nouns.

Word	Noun	Adjective	Verb	Adverb
international mile	Yes	No	No	No
land mile	Yes	No	No	No

As nouns, international mile and land mile are synonyms defined as:

international mile and land mile: a unit of length equal to 1,760 yards or 5,280 feet; exactly 1609.344 meters

Other synonyms of international mile include mi, mile, stat mi, statute mile.

international mile (noun)	land mile (noun)
a unit of length equal to 1,760 yards or 5,280 feet; exactly 1609.344 meters	a unit of length equal to 1,760 yards or 5,280 feet; exactly 1609.344 meters