rule out vs winnow out

rule out and winnow out both are verbs.

Word	Noun	Adjective	Verb	Adverb
rule out	No	No	Yes	No
winnow out	No	No	Yes	No

As verbs, rule out and winnow out are synonyms defined as:

Other synonyms of rule out include eliminate, reject.

rule out (verb)	winnow out (verb)
dismiss from consideration or a contest	dismiss from consideration or a contest
include or exclude by determining judicially or in agreement with rules
make impossible, especially beforehand