Sorry if this sounds like a frivolous question. What I want to know is there really a physical difference between a young adult Sim and an Adult Sim. CAS wise, I have looked for some cute items at the Sim store, for my Sims and some of the items say Adult, others say Young Adult. Are adults slightly taller/bigger than young adults? Does EA have to mesh their clothing items differently to fit an adult body rather than a teen body? Is there really a physical difference between a young adult Sim and an adult Sim? Because I really don't see the difference between the two, and half the time, when I play a premade townie, I think they're young adults, until I look at their age bar, and see they're really adults.
Again, sorry if it sound like a frivolous question, I just hear a lot of talk between adults and young adults, and I don't really see the relevant difference between the two.