A "koiienka" coin is from Russia. The coin is lettered in the Cyrillic alphabet used by Russian and several other Slavic languages. The Russian spelling is "копе́йка", which is usually translated into English as "kopecks".
It seems like you have a Russian coin dated 1998. The coin is likely a circulation coin from that year, possibly featuring symbols relevant to Russian history or culture. The design and denomination of the coin can provide more specific information about its value and background.
Coin Collector
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Russian onions are called "лук" (luk) in Russian.
A 1973 Imperial Russian one ounce coin may be worth thirty dollars or more. The specific worth of the coin depends on how rare it is at the time of sale and the condition.
Kopeck (Kopeicka)
"Russia". If you mean to ask 'what is 'country' called in Russian, that is 'страна' (strana). If you mean to ask what a Russian country house is called, that is 'dacha' (in Russian: дача).
The former Russian parliament is called the Supreme Soviet of the Russian Federation.
what is Russian Parliament called
A coin collection is called, well, a coin collection. The hobby of collecting coins is called numismatics.
The Russian currency consists of Kopeks and Rubles. There are 100 Kopeks in a Ruble.