Secularism (noun)

The belief that religion should not play a role in government, education, or other public aspects of life.

Origin:

From latin saeculum "age, generation" + -ism.

Examples:

1. Secularism is an important principle in many countries.
2. The government's policy of secularism caused controversy.
3. Secularism is a cornerstone of the French Republic.
4. The debate over secularism and religious freedom is ongoing.
5. Secularism is the belief that religious considerations should be excluded from government policy.