chestnut blight vs chestnut canker

chestnut blight and chestnut canker both are nouns.

Word	Noun	Adjective	Verb	Adverb
chestnut blight	Yes	No	No	No
chestnut canker	Yes	No	No	No

As nouns, chestnut blight and chestnut canker are synonyms defined as:

chestnut blight and chestnut canker: a disease of American chestnut trees

Other synonyms of chestnut blight include chestnut-bark disease.

chestnut blight (noun)	chestnut canker (noun)
a disease of American chestnut trees	a disease of American chestnut trees