In modern French, both of the aspirated h and the mute h don’t make any sound. They are voiceless. However, the difference is how each of them interacts and impacts the words next to it. In details, we often refer to two main behaviors that are part at the core of the French language and French pronunciation. The first observed behavior is elision and the second one is liaison. The elision is when a word such as le and la is contracted. For example, le and la contracts to the form of l’. The liaison is when the final consonant of a word (muted) is pronounced together with the initial vowel of the following word.