marchland vs borderland

marchland and borderland both are nouns.

Word	Noun	Adjective	Verb	Adverb
marchland	Yes	No	No	No
borderland	Yes	No	No	No

As nouns, marchland and borderland are synonyms defined as:

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

Other synonyms of marchland include border district, march.

marchland (noun)	borderland (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