option vs deciding

option and deciding both are nouns.

Word	Noun	Adjective	Verb	Adverb
option	Yes	No	No	No
deciding	Yes	Yes	No	No

As nouns, deciding is a hypernym of option; that is, deciding is a word with a broader meaning than option:

Other hypernyms of option include decision making.

option (noun)	deciding (noun)
the act of choosing or selecting	the cognitive process of reaching a decision
one of a number of things from which only one can be chosen
the right to buy or sell property at an agreed price; the right is purchased and if it is not exercised by a stated date the money is forfeited

option (adjective)	deciding (adjective)
	having the power or quality of deciding