The above is a great description of a Retail Sales Clerk, often referred to as a Sales Associate. However, I've been a Sales Associate for most of my life, over the past 30 years of so, and I would offer a different description; a second definition if you will. My experience of being a Sales Associate, sometimes with a wage, most times with a % commission, has been a pleasant one.
My kids were 6 and 7 when they got their 6 year molars but 6 is just an average age. Parents are familiar with when the 2 front teeth come in because that is what is so easily seen when a kid opens his mouth. Your kid may be as young as 10 when the 12 year molars come in. The wisdom teeth are suppose to come in as a young adult (between 18 and 25) but some people's wisdom teeth never come in because their mouth is too small for 32 teeth.
Every child is different, so there is no one-size-fits-all guidelines for the length of time it takes for molars to come through. Instead, a time frame range can help you judge your child's situation. The upper and lower first molars begin between 12 and 17 months. They will be fully in between 27 and 32 months. The upper second molars begin to erupt between 24 and 33 months and will finish between 38 and 48 months. The lower second molars come in between 24 and 36 months and will be set between 34 and 48 months. Cutting molars is no walk in the park for you or your baby.