do you associate supersitition with gullibleness ?

Yes a little. There's entire countries that believe witches still exist and will kick out women when in fact their family just wanted their land. I'd say that's gullible

No, I think much of it originates from the ancients who just didn't have the knowledge of science that we have today.

Yes. Both suggest ignorance.

Sometimes. But both superstition and religious faith are belief without tangible proof.