What are some examples of non tonal languages and how do they differ from tonal languages in terms of pronunciation and meaning?

Non-tonal languages, such as English, do not use pitch variations to distinguish meaning. Examples of tonal languages include Mandarin Chinese and Thai, where pitch changes can alter the meaning of a Word. In tonal languages, the pronunciation of a Word can change its meaning, whereas in non-tonal languages, pronunciation does not affect meaning in the same way.