There is no way to give a comprehensive answer because there are thousands of religions in the world, however, a basic answer is, the difference between religions is, who the central figure of worship is, and the basic tenants of what they believe. Very, very, very basic: (most) Christians believe Jesus was the Son of God and the only way to get to Heaven is to believe in Him. Buddhists believe Buddah was a prophet, and good karma gets you into Heaven. In other words, being a good person gets you in.
Some religions are animist: In those religions, spirits inhabit things, animals, rocks, trees and ponds. Many indigenous religions are like this. Some religions are polytheist, they have multiple gods living in a spirit world that mirrors our Human world and sometimes intersects it at sacred locations. Ancient Greek, Roman and Norse religion were like this, and modern Hinduism is like this. Some religions are dualist, with two warring spirits, one good, one evil. Zoroastrianism was like this, as is that brand of Christianity that makes God and the Devil equals in a fight for the souls of mankind. Some religions are monotheist, holding that there is just one God. Judaism is the classical example of this, and Islam and Christianity can also be counted when they do not elevate Satan to be an anti-God, although Christian trinitarianism weakens monothesim. Some religions are not really about God. Bhuddism, Confucianism are prime examples where there are religious teachings and practices, but where there is no real concept of a God who has any attributes of personhood.
different religions
The different between global and regional religions is simple. Global religions are found all around the world and regional religions are found in very isolated parts of the world.
Each of their governments, religions, and sizes were different.
Neoplatonism was the system that was used in an attempt to address the differences between Christianity and other religions thus promoting the ideal of religious tolerance.
The greatest differences between the major religions is, truth, and how they define God. With truth being an objective reality and God being the creator of reality, only the religion that reflects reality could be true, and be worthy of trust.
Whomever came up with the Islamic religion came up with the differences between the 2 religions.
Well it turns out their were some differences in between the two religions Lutheranism and Calvinism. Lutheranism says that you don't have to pay for your sins, and Calvinism is sort of like Christianity.
Some are monotheistic, while others are polytheistic.
The difference between religions are many; some believe in many Gods, others one God, some believe objects have souls, some believe in Heaven, others in reincarnation. There are too many differences to list. Even between deceptively similar religions like Judaism, Christianity and Islam, there are major differences. If you mean 'opposite', then Atheism is effectively the opposite of religion.
Taoism, Buddhism Conficuonism, Legalism v.s. Shinto. They are completely different, almost opposites on some cases.
There is certainly some overlap between Buddhist principles and the expectations of many theistic religions, but there are differences as well.
Bahá'ís believe that the Bahá'í Faith is the continuation of previous religions (previous relevations of God to mankind, according to Bahá'í belief), therefore you wouldn't expect great differences from other religions.