When the respect is stated, the hearer knows the likeness is confined to that feature. When it is not stated, the imagination need not stop at one expressly mentioned quality and may consider other contextually suitable features of the model.
عموم وجه الشبه ظاهراً
An apparent widening or generality of the point of resemblance.
The qualifier “apparently” matters. The expression does not assert that Zayd literally possesses every anatomical or animal property of a lion. Instead, it removes an explicit verbal restriction, while context and convention guide which attributes are relevant.