booster vs Confederate

booster and Confederate both are nouns.

Word	Noun	Adjective	Verb	Adverb
booster	Yes	No	No	No
Confederate	Yes	Yes	No	No

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

booster (noun)	Confederate (noun)
an additional dose that makes sure the first dose was effective	a supporter of the Confederate States of America
the first stage of a multistage rocket
an amplifier for restoring the strength of a transmitted signal
a thief who steals goods that are in a store
someone who is an active supporter and advocate
a person who backs a politician or a team etc.

booster (adjective)	Confederate (adjective)
	of or having to do with the southern Confederacy during the American Civil War