seabird vs seafowl

seabird and seafowl both are nouns.

Word	Noun	Adjective	Verb	Adverb
seabird	Yes	No	No	No
seafowl	Yes	No	No	No

As nouns, seabird and seafowl are synonyms defined as:

seabird and seafowl: a bird that frequents coastal waters and the open ocean: gulls, pelicans, gannets, cormorants, albatrosses, petrels, etc.

Other synonyms of seabird include sea bird.

seabird (noun)	seafowl (noun)
a bird that frequents coastal waters and the open ocean: gulls, pelicans, gannets, cormorants, albatrosses, petrels, etc.	a bird that frequents coastal waters and the open ocean: gulls, pelicans, gannets, cormorants, albatrosses, petrels, etc.