qui | who, which: in the subject function it refers to people and things, after the preposition - only to people |
que | which, whom : in the object function - both about people and things |
quoi | about things after a preposition |
dont | whose |
où | for place and time description, most commonly: where |
lequel | variation by genus, used in place of "qui" and "que" when there is probability of misunderstanding |