chill vs apprehension

chill and apprehension both are nouns.

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

As nouns, apprehension is a hypernym of chill; that is, apprehension is a word with a broader meaning than chill:

Other hypernyms of chill include apprehensiveness, dread.

chill (noun)	apprehension (noun)
coldness due to a cold environment	the act of apprehending (especially apprehending a criminal)
a sudden numbing dread	the cognitive condition of someone who understands
an almost pleasurable sensation of fright	painful expectation
a sensation of cold that often marks the start of an infection and the development of a fever	fearful expectation or anticipation