ANSWER
I don't think there is one. Those two words are all I have ever heard used.
It would be confusing if you used a religion name and added "-ism", because that could describe the belief itself: "Sikhism, Hinduism, Judaism."
It's odd, because religious discrimination is probably much more common than any other kind: certainly it has caused more wars than anything else. I suppose that religions have their own words for describing their *own* discrimination, though. In Christianity, these would be words such as "heretic", "pagan", "heathen" and so forth. Islam has similar words, such as "kafir".
ANSWER
Religionism: Any attitude, action or institutional structure that systematically treats an individual or group of individuals differently because of their religion. A secondary meaning is the belief that persons who follow one religion are inherently superior to those of other religions. This is a word that is not found in dictionaries, but is badly needed. There are words in the English language that refer to bigotry, hatred and/or a desire to limit the civil rights of people on the basis of race (racism), sex (sexism), sexual orientation (homophobia), nationality (xenophobia), etc. But we have no word that refers to bigotry based of religion. Yet religious bigotry and hatred may be the most serious threat to the continuation of humanity in the 21st century.
http://www.religioustolerance.org/gl_r.htm
Discrimination
Religion doesn't automatically imply discrimination, though religion has been used as a reason for discrimination AND for fighting against discrimination. It all depends on the actual person, not all religious people are 'for discrimination', and not all non-religious people are against discrimination.
Discrimination is the unfair treatment of a person or group without good justification.
Hi, another word for discrimination can be harassment or perjudices.
Height Discrimination.
Religious discrimination
Upbringing, Media or personal experiences
They aren't. The witch trials are not an example of religious discrimination. Puritans accused fellow Puritans of being witches. It was Puritans accusing Wiccans or Catholics or any different religious group.
One antonym of the word discrimination is impartiality.
Members of the Catholic Church emigrated to Rhode Island due to religious discrimination.
Unfortunately, religious discrimination is ubiquitous around the world. This includes nearly every country, including America. For example, American Muslims are a group that commonly get discriminated against.
Robert E. Smith has written: 'The elimination of erroneous distinctions in the body of Christ' -- subject(s): Christianity, Discrimination, Religious aspects, Religious aspects of Discrimination