What's the plural form of toothpaste? Here's the word you're looking for.
Answer
The noun toothpaste can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be toothpaste.
However, in more specific contexts, the plural form can also be toothpastes e.g. in reference to various types of toothpastes
or a collection of toothpastes.