home guard vs yeomanry

home guard and yeomanry both are nouns.

Word	Noun	Adjective	Verb	Adverb
home guard	Yes	No	No	No
yeomanry	Yes	No	No	No

As nouns, yeomanry is a hyponym of home guard; that is, yeomanry is a word with a more specific, narrower meaning than home guard:

home guard: a volunteer unit formed to defend the homeland while the regular army is fighting elsewhere
yeomanry: a British volunteer cavalry force organized in 1761 for home defense later incorporated into the Territorial Army

home guard (noun)	yeomanry (noun)
a volunteer unit formed to defend the homeland while the regular army is fighting elsewhere	class of small freeholders who cultivated their own land
	a British volunteer cavalry force organized in 1761 for home defense later incorporated into the Territorial Army