alewife vs Alosa pseudoharengus

alewife and Alosa pseudoharengus both are nouns.

Word	Noun	Adjective	Verb	Adverb
alewife	Yes	No	No	No
Alosa pseudoharengus	Yes	No	No	No

As nouns, alewife and Alosa pseudoharengus are synonyms defined as:

alewife and Alosa pseudoharengus: shad-like food fish that runs rivers to spawn; often salted or smoked; sometimes placed in genus Pomolobus

Other synonyms of alewife include Pomolobus pseudoharengus.

alewife (noun)	Alosa pseudoharengus (noun)
shad-like food fish that runs rivers to spawn; often salted or smoked; sometimes placed in genus Pomolobus	shad-like food fish that runs rivers to spawn; often salted or smoked; sometimes placed in genus Pomolobus
flesh of shad-like fish abundant along the Atlantic coast or in coastal streams