Language / Czech language sounds like baby talk to most Poles. Similarities? [222]

Merged: Words that are the same in Czech and in Polish

Where could i find a list of words that are the same, more or less, in Polish and in Czech?
I am trying to learn both languages at the same time.

Language / Perfective vs Imperfective - grammar [150]

Merged: perfective and imperfective

I am struggling to learn Polish and of course I am frequently confused about the verb tenses. I realise that there is clearly a significant difference between perfective and imperfective but as a beginner would it confuse a Polish native speaker if I used, for example, ja będę dawać or ja dam ? Would they make allowances for my ignorance?