Answer:
- Folkway; taboo.
Explanation:
'Folkway' is elucidated as the conventional behavior or style of a specific cultural group or community while taboo is described as the implicit prohibition or restriction owing to a social or cultural custom.
In the given example, if a person wears a 'black tie' along with jeans and t-shirt it would demonstrate breaking of 'folkway' as it reflects the escape from the traditional custom or style of dressing but if one shows up to a 'black tie' and infers that 'human flesh would be served in dinner' it breaks the 'taboo' as he failed to consider the social restriction.