Clove oil and eugenol, one of the chemicals it contains, have long been used topically for toothache, but the U.S. Food and Drug Administration (FDA) has reclassified eugenol, downgrading its effectiveness rating. The FDA now believes there is not enough evidence to rate eugenol as effective for toothache pain.
Definition of exclude - deny (someone) access to a place, group, or privilege, remove from consideration Definition of exclude - deny (someone) access to a place, group, or privilege, remove from consideration
Exemption is defined as freedom from an obligation, duty or consequence. When everyone else is required to attend a meeting and you don't have to attend, this is an example of a situation where you have an exemption. an exempting or being exempted; freedom or release from a liability, obligation, etc.; immunity.