scar vs vaccination

scar and vaccination both are nouns.

Word	Noun	Adjective	Verb	Adverb
scar	Yes	No	Yes	No
vaccination	Yes	No	No	No

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

Other hyponyms of scar include callus, cheloid, keloid, pockmark, sword-cut.

scar (noun)	vaccination (noun)
an indication of damage	taking a vaccine as a precaution against contracting a disease
a mark left (usually on the skin) by the healing of injured tissue	the scar left following inoculation with a vaccine

scar (verb)	vaccination (verb)
mark with a scar