chestnut-bark disease vs chestnut canker

chestnut-bark disease and chestnut canker both are nouns.

Word	Noun	Adjective	Verb	Adverb
chestnut-bark disease	Yes	No	No	No
chestnut canker	Yes	No	No	No

As nouns, chestnut-bark disease and chestnut canker are synonyms defined as:

chestnut-bark disease and chestnut canker: a disease of American chestnut trees

Other synonyms of chestnut-bark disease include chestnut blight.

chestnut-bark disease (noun)	chestnut canker (noun)
a disease of American chestnut trees	a disease of American chestnut trees