Is it a bad practice to use similar floating action buttons with different functionalities in different pages

According to Material Design Guidelines, Google states that on any page the primary action of the page can be promoted in the floating action button.

But what if on different pages, we use similar floating action buttons for different proposes?

Both actions on both pages are adding, but the item that is added is different so the functionality is kind of different, but yet it's adding and I can't think of a different icon like "plus icon" to be placed on the fab. Keeping in mind that the pages may be blow by blow, is it a bad practice to do so?