cohort \KOH-hort\, noun:
1. A group or band of people.
2. A companion; an associate.
3. A group of people sharing a common statistical factor (as age or membership in a class) in a demographic study.

The first toothpaste, invented by Washington Wentworth Sheffield, was actually sold as a dental powder. It wasn't until he made a paste and sold it in tin tubes did he become rich!