Declension table of samānārthatva

Neuter	Singular	Dual	Plural
Nominative	samānārthatvam	samānārthatve	samānārthatvāni
Vocative	samānārthatva	samānārthatve	samānārthatvāni
Accusative	samānārthatvam	samānārthatve	samānārthatvāni
Instrumental	samānārthatvena	samānārthatvābhyām	samānārthatvaiḥ
Dative	samānārthatvāya	samānārthatvābhyām	samānārthatvebhyaḥ
Ablative	samānārthatvāt	samānārthatvābhyām	samānārthatvebhyaḥ
Genitive	samānārthatvasya	samānārthatvayoḥ	samānārthatvānām
Locative	samānārthatve	samānārthatvayoḥ	samānārthatveṣu

Compound samānārthatva -

Adverb -samānārthatvam -samānārthatvāt