Final answer:
A carpet covering a hard stain floor is analogous to a curtain hiding a window glass, serving both functional and decorative purposes in a home. Literary references show these items can reveal character traits or background.
Step-by-step explanation:
The student's question is asking for an analogy regarding the purpose of carpets and curtains in a domestic setting. A carpet may be used to cover a hard stain floor, concealing imperfections and adding an element of comfort and design to a room. In a similar manner, a curtain functions to hide window glass or prevent people from seeing inside, while also serving as a decorative element.
If we delve into literature, we find that both carpets and curtains can be part of a story's setting or provide insight into a character's lifestyle or socio-economic status. This can be seen in the references where carpets and floors indicate a room's history or a character's occupation, as in the case of a keen housekeeper or in the portrayal of a salesman who understands the significance of a carpet's aesthetics and origin.