pellet vs projectile

pellet and projectile both are nouns.

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

As nouns, projectile is a hypernym of pellet; that is, projectile is a word with a broader meaning than pellet:

pellet: a solid missile discharged from a firearm
projectile: a weapon that is forcibly thrown or projected at a targets but is not self-propelled

Other hypernyms of pellet include missile.

pellet (noun)	projectile (noun)
a solid missile discharged from a firearm	a weapon that is forcibly thrown or projected at a targets but is not self-propelled
a small rounded mass of a substance	any vehicle self-propelled by a rocket engine

pellet (adjective)	projectile (adjective)
	impelling or impelled forward