Accent and slang

Me : What’s the difference between accent and slang?

My Alter-ego : Good question! Here is the answer.

accent (n) : a mode of pronunciation, as pitch or tone, emphasis pattern, or intonation, characteristic of or peculiar to the speech of a particular person, group, or locality. For ex: French accent; Southern accent, Indian accent.

slang (n) : (in English and some other languages) speech and writing characterized by the use of vulgar and socially taboo vocabulary and idiom expressions.

Me : oh I see!