(gram) possessive, showing possession; that something belongs to somebody "hers" is possessive. the possessive case, eg:-mother's; possessive pronoun,eg:-hers; possessively=adverb.eg:-That's hers ! she said possessively
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my mother's "home"
=my mother's
=possessive case (pronoun)
=The house belongs to hers
=The house is hers
=possessive genitive(pronoun)
My mother's house
=her house
=possessive adjective
eg:-I'm going around to my mother's house which is hers--possessive case--at the weekend.