Basically mutualism, commensalism, and parasitism are forms of symbiosis. (the way animals interact with each other, usually referring to eating)
i don't think this can be associated with households, but an example might be:
mutualism - you need a MP3 player from your sister, but she needs you to do the dishes, etc...
commensalism- idk, maybe your grandma gives you free advice?
parasitism- you take money from your parents-lol.
