marchland vs border district

marchland and border district both are nouns.

Word	Noun	Adjective	Verb	Adverb
marchland	Yes	No	No	No
border district	Yes	No	No	No

As nouns, marchland and border district are synonyms defined as:

marchland and border district: district consisting of the area on either side of a border or boundary of a country or an area

Other synonyms of marchland include borderland, march.

marchland (noun)	border district (noun)
district consisting of the area on either side of a border or boundary of a country or an area	district consisting of the area on either side of a border or boundary of a country or an area