fulmar vs fulmar petrel

fulmar and fulmar petrel both are nouns.

Word	Noun	Adjective	Verb	Adverb
fulmar	Yes	No	No	No
fulmar petrel	Yes	No	No	No

As nouns, fulmar and fulmar petrel are synonyms defined as:

fulmar and fulmar petrel: heavy short-tailed oceanic bird of polar regions

Other synonyms of fulmar include Fulmarus glacialis.

fulmar (noun)	fulmar petrel (noun)
heavy short-tailed oceanic bird of polar regions	heavy short-tailed oceanic bird of polar regions