We have proposed an answer to these questions in our document with 10 recommendations. As described in the paper Deb referred too, collections can be grouped on many things and yes it is hard to get to an exact definition of a natural hist collection. Nevertheless, the use cases for our community seem to require only few groupings, the distinction between collections describing in sum the total collection holdings of an institute (for discovery and access and other collections), and other collections is one. The distinction between collections curated to provide a systematic work of enduring reference from other collections that we call datasets is another. We propose to see datasets not as collections for the catalogue, e.g. a list of specimen records referred in a paper or a set of pages from a field book. We also propose to use the term natural science collections rather than natural history to make it clear that e.g. Earth sample collections are included.