guidance vs cynosure

guidance and cynosure both are nouns.

Word	Noun	Adjective	Verb	Adverb
guidance	Yes	No	No	No
cynosure	Yes	No	No	No

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

guidance: something that provides direction or advice as to a decision or course of action
cynosure: something that provides guidance (as Polaris guides mariners)

guidance (noun)	cynosure (noun)
the act of setting and holding a course	something that strongly attracts attention and admiration
the act of guiding or showing the way	something that provides guidance (as Polaris guides mariners)
something that provides direction or advice as to a decision or course of action