Most people are familiar with the word "Pitch", as in the high-pitched sound of the keys on the far right of a piano, or the low-pitched sound of the far left keys. But fewer people are familiar with the technical term "Frequency", although both words are often used in the same discussion - particularly discussions about how to stop unwanted sounds/noises.
From our ears' point of view, they are the same thing. High-frequency waveforms result in high-pitched sound. The same goes for mid, low or mixed waveforms. An 18-wheeler produces low-frequency waveforms resulting in a low pitch sound to our ears. Generally, traffic produces quite a range of pitches from sirens, to Harleys, and everything in-between. Barking dogs vary from the high pitch of small dog, to the low pitch of a big one.