What is the common nouns for Johnsons baby powder?

Here's how to break down the common nouns in "Johnson's Baby Powder":

* Johnson's: This is a proper noun, referring to the specific company that makes the product. It's not a common noun.

* Baby: This is a common noun, referring to a young child.

* Powder: This is a common noun, referring to a fine, dry substance that is used for a variety of purposes.

So, the common nouns in "Johnson's Baby Powder" are baby and powder.