excitement vs chiller

excitement and chiller both are nouns.

Word	Noun	Adjective	Verb	Adverb
excitement	Yes	No	No	No
chiller	Yes	No	No	No

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

Other hyponyms of excitement include hair-raiser, thrill.

excitement (noun)	chiller (noun)
something that agitates and arouses	excitation that makes your hair stand up or that chills your bones
disturbance usually in protest
the feeling of lively and cheerful joy
the state of being emotionally aroused and worked up