garantiya

/ɡarantija/

Cases

SingularPluralWhen to use it
nominativegarantiyathe guaranteegarantiyalathe guaranteesthe plain dictionary form — the doer of the sentence
genitivegarantiyanıthe guarantee'sgarantiyalanıthe guarantees'the owner — whose it is
accusativegarantiyanıthe guarantee (as the object)garantiyalanıthe guarantees (as the object)a specific, known object — whom or what
dativegarantiyağato the guaranteegarantiyalağato the guaranteesdirection or recipient — to where, to whom
locativegarantiyadaat / in the guaranteegarantiyaladaat / in the guaranteeswhere it is; also having — mende bar, "I have it"
ablativegarantiyadanfrom the guaranteegarantiyaladanfrom the guaranteeswhere 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
mygarantiyammy guaranteegarantiyalarımmy guarantees
yourgarantiyangyour guaranteegarantiyalarıngyour guarantees
his / hergarantiyasıhis / her guaranteegarantiyalarıhis / her guarantees
ourgarantiyabızour guaranteegarantiyalarıbızour guarantees
you all'sgarantiyağızyou all's guaranteegarantiyalarığızyou all's guarantees
theirgarantiyalarıtheir guaranteegarantiyalarıtheir guarantees

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