pellet vs grapeshot

pellet and grapeshot both are nouns.

Word	Noun	Adjective	Verb	Adverb
pellet	Yes	No	No	No
grapeshot	Yes	No	No	No

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

pellet: a solid missile discharged from a firearm
grapeshot: a cluster of small projectiles fired together from a cannon to produce a hail of shot

Other hyponyms of pellet include BB, BB shot, bird shot, buckshot, duck shot, grape, ball, musket ball.

pellet (noun)	grapeshot (noun)
a solid missile discharged from a firearm	a cluster of small projectiles fired together from a cannon to produce a hail of shot
a small rounded mass of a substance