risk vs chance

risk and chance both are nouns.

Word	Noun	Adjective	Verb	Adverb
risk	Yes	No	Yes	No
chance	Yes	Yes	Yes	No

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

Other hyponyms of risk include crapshoot, gamble.

As nouns, chance is a hypernym of risk; that is, chance is a word with a broader meaning than risk:

risk: the probability of being exposed to an infectious agent
chance: a measure of how likely it is that some event will occur; a number expressing the ratio of favorable cases to the whole number of cases possible

Other hypernyms of risk include probability.

As nouns, chance is a hypernym of risk; that is, chance is a word with a broader meaning than risk:

risk: the probability of becoming infected given that exposure to an infectious agent has occurred
chance: a measure of how likely it is that some event will occur; a number expressing the ratio of favorable cases to the whole number of cases possible

Other hypernyms of risk include probability.

As verbs, risk and chance are synonyms defined as:

Other synonyms of risk include adventure, gamble, hazard, run a risk, take a chance, take chances.

risk (noun)	chance (noun)
a venture undertaken without regard to possible loss or injury	a risk involving danger
the probability of being exposed to an infectious agent	a measure of how likely it is that some event will occur; a number expressing the ratio of favorable cases to the whole number of cases possible
the probability of becoming infected given that exposure to an infectious agent has occurred	an unknown and unpredictable phenomenon that causes an event to result one way rather than another
a source of danger; a possibility of incurring loss or misfortune	a possibility due to a favorable combination of circumstances
	the possibility of future success

risk (adjective)	chance (adjective)
	occurring or appearing or singled out by chance

risk (verb)	chance (verb)
expose to a chance of loss or damage	come upon, as if by accident; meet with
take a risk in the hope of a favorable outcome	take a risk in the hope of a favorable outcome
	be the case by chance