jüzüm

/dʒyzym/

Cases

SingularPluralWhen to use it
nominativejüzümthe grapejüzümlethe grapesthe plain dictionary form — the doer of the sentence
genitivejüzümnüthe grape'sjüzümlenithe grapes'the owner — whose it is
accusativejüzümnüthe grape (as the object)jüzümlenithe grapes (as the object)a specific, known object — whom or what
dativejüzümgeto the grapejüzümlegeto the grapesdirection or recipient — to where, to whom
locativejüzümdeat / in the grapejüzümledeat / in the grapeswhere it is; also having — mende bar, "I have it"
ablativejüzümdenfrom the grapejüzümledenfrom the grapeswhere it comes from; also "than" when comparing
When to use each case
nominative
the plain dictionary form — the doer of the sentence
genitive
the owner — whose it is
accusative
a specific, known object — whom or what
dative
direction or recipient — to where, to whom
locative
where it is; also having — mende bar, "I have it"
ablative
where it comes from; also "than" when comparing

The endings are the same ones the pronouns wear — that page explains when each case is used.

With an owner

One ownedSeveral owned
myjüzümümmy grapejüzümlerimmy grapes
yourjüzümüngyour grapejüzümleringyour grapes
his / herjüzümühis / her grapejüzümlerihis / her grapes
ourjüzümübüzour grapejüzümleribizour grapes
you all'sjüzümügüzyou all's grapejüzümlerigizyou all's grapes
theirjüzümleritheir grapejüzümleritheir grapes

The overlap in the last rows is real, not a mistake: jüzümleri can mean "his / her grapes", "their grape", or "their grapes" — context decides.