cutlass vs sword

cutlass and sword both are nouns.

Word	Noun	Adjective	Verb	Adverb
cutlass	Yes	No	No	No
sword	Yes	No	No	No

As nouns, sword is a hypernym of cutlass; that is, sword is a word with a broader meaning than cutlass:

cutlass: a short heavy curved sword with one edge; formerly used by sailors
sword: a cutting or thrusting weapon that has a long metal blade and a hilt with a hand guard

Other hypernyms of cutlass include blade, brand, steel.

cutlass (noun)	sword (noun)
a short heavy curved sword with one edge; formerly used by sailors	a cutting or thrusting weapon that has a long metal blade and a hilt with a hand guard