No, they are not the same. They are separate and distinct deserts.
Syrian Desert is Hot
No, the Sahara is located in Africa and the Arabian Desert is in Asia.
The Arabian Desert is on the Arabian Peninsula in Asia.
It's always been the desert
well... it is mostly only summer and winter......
There are three:Rub' al Khali (The Empty Quarter)An Nafud or the Great Nafud is an upland desert of red sands.Ad Dahna' is a narrow strip of sandy terrain.
neither, actually there the same in length
That's a good question. Arabian horses have some of the same enemies as horses that aren't born and raised in the desert do! They have to deal with the heat, with small, posionous snakes, scorpions, etc.
The Sahara Desert
Using 9,000,000 sq. km as the area of the Sahara (from Wikipedia), if the Sahara were a country, it would rank just between Brasil (8,514,877 sq. km) and China (9,598,094 sq. km). The United States is the next larger country at 9,629,091 sq. km. So no country is the "same" size as the Sahara based on these figures.
The desert and the rain forest are both located in hot areas.
The Sahara is a big continuous desert in North Africa. I'm not sure where you got the idea that the Arabian desert is a collection of smaller deserts, but if you look at the map it looks quite continuous and very dry. I haven't noticed any gaps between its "collections".