sect

As an adjective heretic

is heretical.

As a noun sect is

an offshoot of a larger religion; a group sharing particular (often unorthodox) political and/or religious beliefs.

As nouns the difference between sect and caste

is that sect is an offshoot of a larger religion; a group sharing particular (often unorthodox) political and/or religious beliefs while caste is any of the hereditary social classes and subclasses of South Asian societies.

In obsolete terms the difference between community and sect

is that community is commonness; frequency while sect is a cutting; a scion.

As nouns the difference between community and sect

is that community is a group sharing a common understanding and often the same language, manners, tradition and law. See civilization while sect is an offshoot of a larger religion; a group sharing particular (often unorthodox) political and/or religious beliefs.

Clan is a synonym of sect.

As nouns the difference between sect and clan

is that sect is an offshoot of a larger religion; a group sharing particular (often unorthodox) political and/or religious beliefs while clan is a group of people all descended from a common ancestor, in fact or belief.

As a noun sect is

an offshoot of a larger religion; a group sharing particular (often unorthodox) political and/or religious beliefs.

Belief is a related term of sect.

As nouns the difference between belief and sect

is that belief is mental acceptance of a claim as likely true while sect is an offshoot of a larger religion; a group sharing particular (often unorthodox) political and/or religious beliefs.

As nouns the difference between splinter and sect

is that splinter is a long, sharp fragment of material, often wood while sect is an offshoot of a larger religion; a group sharing particular (often unorthodox) political and/or religious beliefs.

As a verb splinter

is to come apart into long sharp fragments.

Faith is a related term of sect.

As nouns the difference between faith and sect

is that faith is seer, soothsayer while sect is an offshoot of a larger religion; a group sharing particular (often unorthodox) political and/or religious beliefs.

As nouns the difference between sect and school

is that sect is an offshoot of a larger religion; a group sharing particular (often unorthodox) political and/or religious beliefs while school is a group of fish or a group of marine mammals such as porpoises, dolphins, or whales.

As a verb school is

to form into, or travel in a school.

As nouns the difference between sect and membership

is that sect is an offshoot of a larger religion; a group sharing particular (often unorthodox) political and/or religious beliefs while membership is the state of being a member of a group or organization.