The root for "to talk" is ك ل م, the word for "word" is كَلِمة أتكلم = to talk أتحدث = to converse Therefore, both words are perfectly suitable for expressing what you want to say, but engaging in a conversation implies that there must be a person at whom you address your conversation, on the other hand you could just "talk" even if no one is listening. معك = with you, إليك = to you. 1. أنا أتكلم معك = I'm talking with you (signular) 2. أنا أتحدث إليكم = I'm having a conversation to you (plural, but in this case I would rather use "with you"): أنا أتحدث معكم 3. أنا أتحدث معك = I'm having a conversation with you (singular). To say to someone "I'm talking to you", as to grab their attention towards the fact that you're addressing them in conversation, I'd say: أنا أكلمك