Explanation:
Plebiscite; the direct vote of all the members of an electorate on an important public question such as a change in the constitution.
AÂ referendum;Â is a direct and universal vote in which an entire electorate is invited to vote on a particular proposal and can have nationwide or local forms.
Flexible Constitution;Â Â a constitution that may be amended by the ordinary process of legislation and is therefore relatively easy to amend.