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
Each of their governments, religions, and sizes were different.
The system used to address the differences between Christianity and other religions was called ecumenism. This approach aimed to promote dialogue and understanding between different religions in order to foster religious tolerance and cooperation. It sought to find common ground and mutual respect among believers of different faiths.
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.
There is certainly some overlap between Buddhist principles and the expectations of many theistic religions, but there are differences as well.
Taoism, Buddhism Conficuonism, Legalism v.s. Shinto. They are completely different, almost opposites on some cases.
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.
The wars of religion primarily involved conflict between Catholics and Protestants in Europe during the 16th and 17th centuries. These wars were driven by religious differences and struggles for political power between these two major Christian groups.
Global religions are practiced worldwide and have significant numbers of followers across different regions, such as Christianity and Islam. Regional religions, on the other hand, are specific to certain geographic areas and may have a smaller following, like Shinto in Japan or Hinduism in India. Global religions tend to have broader influence and outreach, while regional religions are more localized in their practice and beliefs.