Some dictionaries like Merriam-Webster and The Freedictionary.com define the phrase "make every effort" in them while no dictionaries, including the two, have "make all efforts" in their word lists. Both of them are, however, often seen in newspapers, magazines, email correspondences etc., and I'm wondering if there is any difference in implied nuances between them. For instance, what would be the difference between the following two sentences, if any?
- We will make every effort to ensure the safety and quality of our products.
- We will make all efforts to ensure the safety and quality of our products.