cavalryman vs dragoon

cavalryman and dragoon both are nouns.

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

As nouns, dragoon is a hyponym of cavalryman; that is, dragoon is a word with a more specific, narrower meaning than cavalryman:

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

Other hyponyms of cavalryman include cuirassier, hussar, lancer, Rough Rider.

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

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