port

/port/

Cases

SingularPluralWhen to use it
nominativeportthe portportlathe portsthe plain dictionary form — the doer of the sentence
genitiveportnuthe port'sportlanıthe ports'the owner — whose it is
accusativeportnuthe port (as the object)portlanıthe ports (as the object)a specific, known object — whom or what
dativeporthato the portportlağato the portsdirection or recipient — to where, to whom
locativeportdaat / in the portportladaat / in the portswhere it is; also having — mende bar, "I have it"
ablativeportdanfrom the portportladanfrom the portswhere 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
myportummy portportlarımmy ports
yourportungyour portportlarıngyour ports
his / herportuhis / her portportlarıhis / her ports
ourportubuzour portportlarıbızour ports
you all'sportuğuzyou all's portportlarığızyou all's ports
theirportlarıtheir portportlarıtheir ports

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