ثاني ( and not تاني ) means "the second" (like the second one...) أريد is Arabic, & عاوز is Egyptian dialect صاحب & صديق aren't colloquial.. صديق is your friend, someone who is close to you, صاحب is like your companion دكان is like a grocery, محل (and not محال) means a shop

تـاني means ("second" or "Again") in Egyptian Arabic -------------------- "I want" : أريد = Oreed ~ is in general Arabic عاوز = awiz ~ is in Egyptian Arabic --------------------- Friend : you can use both words in (colloquial & stander Arabic anywhere) because both means "friend" except that "صاحب=Sahib" can also mean "The owner" or "Came along With" ex: علي صاحب أحمد = Ali Sahib =Ali is Ahemd's friend علي صاحب أحمد إلي البحر = ali Sahab Ahmed ela al-bhr =Ali came along with Ahmed to the sea. علي صاحب السيارة= Ali Sahib al-siyara = Ali is the car's owner -------------------- دكان *Dokkan; means "Shop" where it singular & the plural is "دكاكين * Dakakeen" محال *Mahal mean "Shops" but it also can be singular in "محل *Mhl" so if you want to say just *Shop* it's ok to use *Dokkan or *Mhl in any arabic