The sharp words are carrying the accent on the last syllable; i.e., this syllable is pronounced with greater intensity phonetic and will also have a tilde over a vowel if it ends in n, s or vowel. In our language there are many sharp words, even if the sticks are more numerous. 10 examples of sharp words: action, will, guarani, cottage cheese, Hummingbird, truth, more, know, choice, value. As it is evident, a leading tilde and others not.