> A database is usually a union of all of the questions that can be asked about a topic
That's some AI level sophism.
A database is a durable store of data that can be modified and read. Ostensibly, we're talking about computer databases. You can define the soft terms at your leisure and to suit your needs. There are many categories of discussion that will never intersect with this definition. Communication is not a database. Art is not a database. History is not a database. Medicine is not a database. et al.
A cache is a database. Differentiating a cache and database by label is a misnomer.
