short-billed marsh wren vs sedge wren

short-billed marsh wren and sedge wren both are nouns.

Word	Noun	Adjective	Verb	Adverb
short-billed marsh wren	Yes	No	No	No
sedge wren	Yes	No	No	No

As nouns, short-billed marsh wren and sedge wren are synonyms defined as:

short-billed marsh wren and sedge wren: small American wren inhabiting wet sedgy meadows

Other synonyms of short-billed marsh wren include Cistothorus platensis.

short-billed marsh wren (noun)	sedge wren (noun)
small American wren inhabiting wet sedgy meadows	small European warbler that breeds among reeds and wedges and winters in Africa
	small American wren inhabiting wet sedgy meadows