The correct spelling of the phrase "wast element of" is actually "waste element of." The first word, "waste," is pronounced /weɪst/ with a long A sound and a silent E at the end. The second word, "element," is pronounced /ˈɛlɪmənt/ with the stress on the first syllable and a short E sound in the second syllable. It is important to spell and pronounce words correctly in order to effectively communicate ideas and be understood by others.