When Is a Product a Security Product?

I often find myself in mild arguments over whether this or that product is a security product. The competing alternative explanations are generally just spin: Is such and such a service best called "business process outsourcing" or a "managed security service?" Is such and such a tool most evocatively described as an "intellectual property management toolkit," or is it instead an "access control system?" The commercial abuse of language continues apace, but abuse of the language isn’t a good subject matter for Clear Text.