There is quite a mix up regarding waterproof and water-resistant terms. Most of the time, these terms are used synonymously. But there is a big difference between them, especially when the expectation is to stay dry in adverse weather conditions. then what does each term means?! let’s see.
in this case for water resistance the term means to withstand water to a certain degree, for example if there is a water-resistant phone, it will withstand under water to a specified time and depth and if you exceed this limit the water will spread through it.
As for the original term against water, it is “waterproof” or in the scientific form “hydrophobic”, which means tolerating water not spreading, regardless of the depth or time of exposure to it.