Are yellow fever and malaria the same?

What is the diffference between the two?

They have some differences.
Yellow fever (also called yellow jack, black vomit, or sometimes American Plague) is an acute viral disease. It is still an important cause of hemorrhagic illness in several African and South American countries despite existence of an effective vaccine. In the past it was a source of several devastating epidemics. As of 2005, the World Health Organization (WHO) estimates that yellow fever causes 200,000 illnesses and 30,000 deaths every year in unvaccinated populations.

The disease is caused by an arbovirus of the family Flaviviridae, and is one of the smallest RNA viruses isolated by man.

Malaria, derived from mala aria (Italian for "bad air") and formerly called ague or marsh fever in English, is an infectious disease which causes about 350-500 million infections with humans and approximately 1.3 million deaths annually, mainly in the tropics. Sub-Saharan Africa accounts for 85% of these fatalities.[1]

Malaria is caused by the protozoan parasites of the genus Plasmodium (of the phylum Apicomplexa), and the transmission vector for human malarial parasite is the female Anopheles mosquito. The P. falciparum variety of the parasite accounts for 80% of cases and 90% of deaths. Children under the age of five and pregnant women are the most vulnerable to the severe forms of malaria