thumb - the short thick finger on the side of your hand that makes it possible to hold and pick things up easily.
common - the same in a lot of places or for alot of people
enriched - better, improved, of a better quality
gathering - a party or a meeting when many people come together as a group
spitting - when contents of the mouth, especially saliva is pushed out
etiquette - the set of rules or customs that control accepted behaviour in a particular social groups or social situations