marchland vs district

marchland and district both are nouns.

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

As nouns, district is a hypernym of marchland; that is, district is a word with a broader meaning than marchland:

marchland: district consisting of the area on either side of a border or boundary of a country or an area
district: a region marked off for administrative or other purposes

Other hypernyms of marchland include dominion, territorial dominion, territory.

marchland (noun)	district (noun)
district consisting of the area on either side of a border or boundary of a country or an area	a region marked off for administrative or other purposes

marchland (verb)	district (verb)
	regulate housing in; of certain areas of towns