Geography is the study of the description of the Earth. It includes the study of land features, climate, inhabitants, etc. on Earth. On the other hand, Topography is the study and mapping of the shapes and features of the places. Unlike, Geography it is not limited to the Earth.

Stress and Tension both create a mental pressure on an individual, going through the respective phases. Medically, stress is a response or stimulus to the unwilling environmental conditions; whereas tension is an unstable mental condition where an individual suffers through a nervous strain.

The main difference between the two is that, the soil has pores which allow the water and nutrients to be held, whereas the soil is loose, grainy and does not have pores to hold water or nutrients.

Orthopedics and Orthopaedics is the branch of medicine which deals with the correction of deformities of bones or muscles. The term ‘orthopedics’ is a generally accepted spelling for the specialty in the relevant field, but ‘orthopaedics’ is the correct medical spelling of the term.

Sterilization refers to the process of eliminating all microbial growth from the surface of any object. Sanitization is the process of cleaning something or reducing the amount of microbial life on a particular product.

Pasteurization is the process of heating food, specifically liquids, to a specific temperature to slow microbial growth in the food. Sterilization refers to the process of eliminating all forms of bacteria from any product.

Prawns and fishes are surely similar in their looks and features as both have fins, however prawns are not fishes. Prawn is a crustacean, identified by its shell and lack of a spine, whereas fishes can be identified by its lack of backbone and the ability to breathe in water.

A hurricane is tropical cyclone that is characterized by thunderstorms, strong winds and heavy rains. Whereas, a blizzard is a winter bound storm, which is mainly caused by strong continued winds. A hurricane can cause wind speed of 74mph to over 155mph, compared to a blizzard whose wind speeds are between 35mph and 45mph.

Both, Leeches and Slugs are elongated-slimy creatures, but vary in their habitats. Leeches are relatives of earthworms, and mostly feed upon blood of other creatures, whereas Slugs belongs to Mollusks, hence their structure resembles to that of snails, but lack the outer shells or tough covering.

Earthworms and Leeches are hermaphrodites, but differ in their subclasses; Earthworms fall under sub class Oligochaeta, whereas Leeches fall under Hirudinae.

Vaccination is the administration of a weakened form the virus to allow the body to become immune to the disease. Immunization is the process of the body building up immunity to a particular disease.

Organic farming is the process of growing plants or produce without using industrial chemicals. Chemical farming, also known as Intensive farming is the process of growing plants and produce using low crop rotation ratio, high use of labour and extensive use of chemical pesticides and fertilizers.

The main difference between Tiger and Leopard is that Tiger is the biggest member of the cat family, whereas Leopard is the smallest feline member. Tigers have a large muscular body with powerful forelimbs, which are used for hunting and climbing. On the other hand, Leopards are also large and muscular, but they have short legs, a long body and a large skull.