Consonants refer to the speech sounds or letters of the alphabet that are not vowels. A consonant sound is pronounced by stopping the air from flowing through the mouth (involving either the lips or the tonque).
Consonants in the English language are: b, c, d, f, g, h, j, k, I, m, n, p, q, r, S, t, v, W, x, y and z. There are 21 consonants in total. However, there are 24 consonant sounds in English.