chill vs refrigerate

chill is a noun but refrigerate is not a noun.

Word	Noun	Adjective	Verb	Adverb
chill	Yes	No	Yes	No
refrigerate	No	No	Yes	No

As verbs, refrigerate is a hyponym of chill; that is, refrigerate is a word with a more specific, narrower meaning than chill:

Other hyponyms of chill include quench, ice.

chill (noun)	refrigerate (noun)
coldness due to a cold environment
a sudden numbing dread
an almost pleasurable sensation of fright
a sensation of cold that often marks the start of an infection and the development of a fever

chill (verb)	refrigerate (verb)
loose heat	cool or chill in or as if in a refrigerator
make cool or cooler	preserve by chilling
depress or discourage