Probability
Yes, the noun 'probability' is an abstract noun; a word for the chance that something will happen; something that has a chance of happening; a measure of how often a particular event will happen; a word for a concept.
Yes, the word 'probability' is a noun, a singular, common, abstract noun; a word for the chance that something will happen; something that has a chance of happening; a measure of how often a particular event will happen; a word for a concept; a word for a thing.
The word, "Impossibility" refers to something that could never happen.
Opportunity.
"Cause" is the action word that makes something happen.
To "Cause" is a five letter action word makes something happen.
Contingency
Permission for something to happen or agreement to do something.
To take a chance is to take a risk; to try something without being certain of the outcome.
The noun 'chance' is an abstract noun; a word for a possibility or probability of something; an opportunity to do or achieve something; occurrence in the absence of any obvious intention; a word for a concept.A concrete noun is something that can be experienced by any of the five physical senses; something that can be seen, heard, smelled, tasted, or touched; a word for a physical thing.The word 'chance' is also a verb and an adjective.
to 'dare' to do something
It is something you do that you are not sure about the outcome. Another word would be gamble or risk.