şum

/ ʃum /

Cases

SingularPluralWhen to use it
nominative şum the silence şumla the silences the plain dictionary form — the doer of the sentence
genitive şumnu the silence's şumlanı the silences' the owner — whose it is
accusative şumnu the silence (as the object) şumlanı the silences (as the object) a specific, known object — whom or what
dative şumğa to the silence şumlağa to the silences direction or recipient — to where, to whom
locative şumda at / in the silence şumlada at / in the silences where it is; also having — mende bar, "I have it"
ablative şumdan from the silence şumladan from the silences 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
my şumum my silence şumlarım my silences
your şumuŋ your silence şumlarıŋ your silences
his / her şumu his / her silence şumları his / her silences
our şumubuz our silence şumlarıbız our silences
you all's şumuğuz you all's silence şumlarığız you all's silences
their şumları their silence şumları their silences

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