When you blow your nose, what do you reach for? Chances are you reach for a "Kleenex" and not a facial tissue. Kleenex is the trade-marked name for Kimberly-Clark's facial tissue.
If you want to relax in a hot tub, chances are you call the hot tub a "Jacuzzi". There are many manufacturers of hot tubs, but Jacuzzi is the market leader.
Would you call this a slow cooker or a "Crock-Pot"? Many companies manufacture slow cookers, but the name Crock-Pot is trademarked by Rival Industries.
Some people would not copy a piece of paper, they would "Xerox" it. I have also heard people reference copied paper as "Xeroxes".
When you have a cut do you grab a bandage or a Band-Aid? Band-Aids are trademarked by Johnson and Johnson.
What game are these people playing? "Ping Pong" or table tennis? Ping-Pong was copyrighted by an English firm J. Jacques and Son, Ltd in 1901. The trademark was later sold to Parker Brothers.
When we have a teleconference with our good friends in London, we don't teleconference them, we "Skype" with them.
I had some friends in college from Atlanta. They referred to all soft drinks as a "Coke". When I asked them about an orange soda, they called it an "orange Coke"!
What is this boy playing with? You probably call it a yo-yo, and not a toy on a string. Duncan trademarked the name in 1929.
If you want to search the web for lessons in economics, you "Google" it!
*All images are from iStock