Candid photography is the idea to capture the soul of the subject rather than their staged appearance. It is spontaneous and brings the neutrality of the subject. The candid photograph bring real colour of a wedding photo-shoot.
potrait is a picture of a person that focus on his/their personality. The person knows how he looks his poses and it extracts the cavernous of his persona. This is one type of still photography.
Landscape photographs typically capture the presence of nature but the main point would be shown on the photograph with balance of the frame. The horizon is not filled up. The photographers should pay attention of the lighting.
It creates the ultimate identity of a photographer. A fashion photographer has a good idea of lighting, ideas with the creative pose, good knowledge on the background objects of the models, selecting a good location for the photo-shot, basic understanding with the model, exact timing of the snaps.