chancroid vs ulceration

chancroid and ulceration both are nouns.

Word	Noun	Adjective	Verb	Adverb
chancroid	Yes	No	No	No
ulceration	Yes	No	No	No

As nouns, ulceration is a hypernym of chancroid; that is, ulceration is a word with a broader meaning than chancroid:

chancroid: infectious venereal ulcer
ulceration: a circumscribed inflammatory and often suppurating lesion on the skin or an internal mucous surface resulting in necrosis of tissue

Other hypernyms of chancroid include ulcer.

chancroid (noun)	ulceration (noun)
infectious venereal ulcer	the process of ulcer formation; the process of becoming ulcerated
	a circumscribed inflammatory and often suppurating lesion on the skin or an internal mucous surface resulting in necrosis of tissue