Noun
semblance - The way something appears on the surface, often without revealing the true nature or reality behind it.

In spite of their their kids' constant uncontrolled behavior, when they were outside they managed to keep up the semblance of calm, even though things were not so calm inside their house.
hysteria - A state of extreme excitement, fear or anger in which a person, or a group of people, loses control of their emotions and starts to cry, laugh, etc.

There was almost mass hysteria when the band played their final song and some in the crowd rushed towards the stage.
hillbilly - A person from a rural, mountainous area of the United States, especially the Appalachians. Can be used in an insulting manner.

The hillbilly family made a store in Alabama, and its theme is that the families in rural America may not be sophisticated, but they have a big heart and close family ties.