faith (noun)

According to Princeton WordNet:

1. religion, faith, religious belief (a strong belief in a supernatural power or powers that control human destiny) “he lost his faith but not his morality”

2. faith, trust (complete confidence in a person or plan etc) “he cherished the faith of a good woman”; “the doctor-patient relationship is based on trust”

3. religion, faith, organized religion (an institution to express belief in a divine power) “he was raised in the Baptist religion”; “a member of his own faith contradicted him”

4. faith (loyalty or allegiance to a cause or a person) “keep the faith”; “they broke faith with their investors”

From Websters Dictionary:

1a : allegiance to duty or a person : loyalty b (1) : fidelity to one’s promises (2) :  sincerity of intentions

2a (1) : belief and trust in and loyalty to God (2) : belief in the traditional doctrines of a religion b (1) : firm belief in something for which there is no proof (2) : complete trust

3 : something that is believed especially with strong conviction; especially : a system of religious beliefs <the Protestant faith>