Vector borne disease are caused by vectors(carrying agents) such as malaria ,dengue by mosquitoes, diarrhoea by flies etc. Water borne diseases are that which are caused by faecal contamination of water. Contaminated water when drunk causes diseases such as typhoid, cholera etc.
Dengue is a vector borne disease caused by vector, Ades mosquito . Typhoid is a water borne disease caused by contamination of water