sedge wren vs short-billed marsh wren

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

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

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

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

Other synonyms of sedge wren include Cistothorus platensis.

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