Nature

shadow, shade

Source:*těnьProto-Slavicprobable

Proto-Slavic had three look-alike forms, *těnь, *stěnь and *sěnь; how they relate to each other is not fully settled.

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English

shadow, shade

Polish

cień

tɕɛɲ

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In all five languages

BCS script

Latin under Cyrillic

Russian
теньtenʹ
tʲenʲinherited
Ukrainian
тіньtinʹ
tʲinʲinherited
Polish
cień
tɕɛɲinherited
Czech
stín
sciːndifferent word · Proto-Slavic *stěnь, a variant of *těnь with s-
Bosnian-Croatian-Serbian
sjenaсјена
ˈsjenadifferent word · Proto-Slavic *sěnь, a variant of *těnь
Standard-specific words: sjenka (Serbian (ijekavian)); senka (Serbian (ekavian)) — Serbian prefers the diminutive.
English
shadow, shade