chill vs low temperature

chill and low temperature both are nouns.

Word	Noun	Adjective	Verb	Adverb
chill	Yes	No	Yes	No
low temperature	Yes	No	No	No

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

Other hypernyms of chill include cold, coldness, frigidity, frigidness.

chill (noun)	low temperature (noun)
coldness due to a cold environment	the absence of heat
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