Blasphemy, as defined in some religions or religion-based laws, is an insult that shows contempt, disrespect or lack of reverence concerning a deity, a sacred object or something considered inviolable.[4]
nounHeresy is any belief or theory that is strongly at variance with established beliefs or customs, in particular the accepted beliefs of a church or religious organization. The term is usually used in reference to violations of important religious teachings, but is also used of views strongly opposed to any generally accepted ideas. A heretic is a proponent of heresy.
noun