Declension table of ?karśana

Neuter	Singular	Dual	Plural
Nominative	karśanam	karśane	karśanāni
Vocative	karśana	karśane	karśanāni
Accusative	karśanam	karśane	karśanāni
Instrumental	karśanena	karśanābhyām	karśanaiḥ
Dative	karśanāya	karśanābhyām	karśanebhyaḥ
Ablative	karśanāt	karśanābhyām	karśanebhyaḥ
Genitive	karśanasya	karśanayoḥ	karśanānām
Locative	karśane	karśanayoḥ	karśaneṣu

Compound karśana -

Adverb -karśanam -karśanāt