kafa=mind / mental attitude baş=head so if this is true than how those sentences above are possible? Boyun kafayı vücuda bağlar. ( shouldn't it be 'baş' )? Bir kimsenin kafasını koparmak ( and again why not 'baş' instead of 'kafa' here )? Anyone can please explain cause now i am very confused and don't know anymore when to use 'baş' and in which case 'kafa'?