>Just be carefull with russian words - the have often a lot of extra meanings. Remember а or к. ::)

Slavic languages are a clockwork pussycat compared to English, when it comes to words with multiple meanings. True, any word can have sexual connotations, but that's more the matter of a sentence and its innuendos than of the regular usage of the word. In English, however, most of the words have multiple meanings depending on context (look up the ambiguity link in my signature).

The trouble with Serbian vs Russian is with false friends. Since the languages share a common root, there are many words which are recognized as common, while they have different meanings. Here's a few common triplets:

word          meaning (ru)       meaning (sr)
krasni        red                nice
pravo         right              straight
oblok/oblak   window             cloud
slovo         word               letter, character
rech          speech             word
pitat'        feed               ask (a question)
iskustvo      art                experience