Freedom of religion is the freedom of an individual or community, in public or private, to manifest religion or belief in teaching, practice, worship, and observance. It is generally recognized to also include the freedom to change religion or to not follow any religion. Freedom of religion is considered by many in many nations and people to be a fundamental human right.
Where individuals and not governments are concerned, religious toleration is generally taken to refer to an attitude of acceptance towards other people's religions. Such toleration does not require that one view other religions as equally true; rather, the assumption is that each citizen will grant that others have the right to hold and practice their own beliefs. Against this backdrop proselytism can be a contentious issue, as it could be regarded as an offense against the validity of others' religious beliefs, including the belief in no religion at all.
Ref. - http://en.wikipedia.org/wiki/Freedom_of_religion
-Aleman