There are multiple definitions - click on the translation that matches your context.

bizonyosság

főnév

full

assurance

noun

Definitions of assurance

English

a promise

They gave me an assurance that they had no plans for job cuts.

English

a type of insurance where the money is always paid to the policy holder or beneficiaries, especially when someone dies or after a fixed period of time

Assurance holders will still receive payment even if they have lost their original certificates..

English

confidence

I have no assurance of their identity.