buckler vs escutcheon

buckler and escutcheon both are nouns.

Word	Noun	Adjective	Verb	Adverb
buckler	Yes	No	No	No
escutcheon	Yes	No	No	No

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

Other hyponyms of buckler include scutcheon, pavis, pavise.

buckler (noun)	escutcheon (noun)
armor carried on the arm to intercept blows	a shield; especially one displaying a coat of arms
	(nautical) a plate on a ship's stern on which the name is inscribed
	a flat protective covering (on a door or wall etc) to prevent soiling by dirty fingers