American blight vs woolly apple aphid

American blight and woolly apple aphid both are nouns.

Word	Noun	Adjective	Verb	Adverb
American blight	Yes	No	No	No
woolly apple aphid	Yes	No	No	No

As nouns, American blight and woolly apple aphid are synonyms defined as:

American blight and woolly apple aphid: primarily a bark feeder on aerial parts and roots of apple and other trees

Other synonyms of American blight include Eriosoma lanigerum.

American blight (noun)	woolly apple aphid (noun)
primarily a bark feeder on aerial parts and roots of apple and other trees	primarily a bark feeder on aerial parts and roots of apple and other trees