dragoon vs cavalryman

dragoon and cavalryman both are nouns.

Word	Noun	Adjective	Verb	Adverb
dragoon	Yes	No	Yes	No
cavalryman	Yes	No	No	No

As nouns, cavalryman is a hypernym of dragoon; that is, cavalryman is a word with a broader meaning than dragoon:

dragoon: a member of a European military unit formerly composed of heavily armed cavalrymen
cavalryman: a soldier mounted on horseback

Other hypernyms of dragoon include trooper.

dragoon (noun)	cavalryman (noun)
a member of a European military unit formerly composed of heavily armed cavalrymen	a soldier mounted on horseback
	a soldier in a motorized army unit

dragoon (verb)	cavalryman (verb)
compel by coercion, threats, or crude means
subjugate by imposing troops