stem canker vs rosette

stem canker and rosette both are nouns.

Word	Noun	Adjective	Verb	Adverb
stem canker	Yes	No	No	No
rosette	Yes	No	No	No

As nouns, stem canker and rosette are synonyms defined as:

Other synonyms of stem canker include little potato, russet scab.

stem canker (noun)	rosette (noun)
rhizoctinia disease of potatoes	an ornament or pattern resembling a rose that is worn as a badge of office or as recognition of having won an honor
	circular window filled with tracery
	a cluster of leaves growing in crowded circles from a common center or crown (usually at or close to the ground)
	rhizoctinia disease of potatoes