Only if we are not talking about biology, and we do that here. There are no female orcs in the texts itself, their existence is confirmed only in the further legendarium. If we talk biology we do so using biological terms. Even if Tolkien does not use the terms "gestations" or "lactation" or "postpartal depression" (see Miriel), those entities for sure did exists in his fictional world too. To oppose using those terms in this discussion is a bit random and artificial imho?But my whole point is that none of that is relevant to this fictional universe. We have no shared history or classifications at all. Maybe it's a fundamental difference we have of literary theory.