option vs preference

option and preference both are nouns.

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

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

option (noun)	preference (noun)
the act of choosing or selecting	grant of favor or advantage to one over another (especially to a country or countries in matters of international trade, such as levying duties)
one of a number of things from which only one can be chosen	the right or chance to choose
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	a predisposition in favor of something
	a strong liking