sedge wren vs sedge bird

sedge wren and sedge bird both are nouns.

Word	Noun	Adjective	Verb	Adverb
sedge wren	Yes	No	No	No
sedge bird	Yes	No	No	No

As nouns, sedge wren and sedge bird are synonyms defined as:

sedge wren and sedge bird: small European warbler that breeds among reeds and wedges and winters in Africa

Other synonyms of sedge wren include Acrocephalus schoenobaenus, reedbird, sedge warbler.

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