In poor understanding, the speaker's actual meaning is not grasped. In deceptive resemblance, a false proposition is confused with a true one because they look or sound alike.
Example 1: reading “Zayd's brother arrived” as “Zayd arrived” misidentifies the statement.
Example 2: treating “Every human is an animal” as though it entailed “Every animal is human” turns a true universal into an invalid converse.
Both can be understood as a failure to distinguish the thing from what resembles it. The commentary notes this more unified account.