Final answer:
Equating 'Some furniture is not tables' to 'Some tables are not furniture' is a converse error.
Step-by-step explanation:
Equating "Some furniture is not tables" to "Some tables are not furniture" is a logical reasoning issue known as e) converse error. A converse error occurs when one assumes that a statement can be reversed and still be true, which isn't necessarily the case. In logic, the original statement "Some furniture is not tables" does not imply that "Some tables are not furniture" as the two categories aren't mutually exclusive. While all tables are indeed pieces of furniture, not all furniture are tables, but the reverse doesn't logically follow that some tables would not be furniture.