brand vs backsword

brand and backsword both are nouns.

Word	Noun	Adjective	Verb	Adverb
brand	Yes	No	Yes	No
backsword	Yes	No	No	No

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

brand: a cutting or thrusting weapon that has a long metal blade and a hilt with a hand guard
backsword: a sword with only one cutting edge

Other hyponyms of brand include broadsword, cavalry sword, saber, sabre, cutlas, cutlass, falchion, fencing sword, rapier, tuck.

brand (noun)	backsword (noun)
a cutting or thrusting weapon that has a long metal blade and a hilt with a hand guard	a sword with only one cutting edge
a recognizable kind	a stick used instead of a sword for fencing
a name given to a product or service
a symbol of disgrace or infamy
identification mark on skin, made by burning
a piece of wood that has been burned or is burning

brand (verb)	backsword (verb)
mark or expose as infamous
mark with a brand or trademark
to accuse or condemn or openly or formally or brand as disgraceful
burn with a branding iron to indicate ownership; of animals