Buccal
Part of speech: adjective
Definition: Of or relating to the cheek or, more rarely, the mouth. On the side facing the cheek. Administered in the mouth, not by swallowing but by absorption through the skin of the cheek; often by placing between the top gum and the inside of the lip.
Oral
Part of speech: adjective
Definition: Relating to the mouth.Spoken rather than written.
Part of speech: noun
Definition: Short for an oral test or oral exam, particularly in a language class.Short for a physical oral examination or oral exam.Short for oral sex.
Example sentence: It is hardly an exaggeration to say that oral teachers and sign teachers found it difficult to sit down in the same room without quarreling, and there was intolerance upon both sides. To say 'oral method' to a sign teacher was like waving a red flag in the face of a bull, and to say 'sign language' to an oralist aroused the deepest resentment.