👉 The term "consonant" refers to any vowel sound, including the silent 'a' and 'e', which are not considered as vowels in English. In other words, a consonant is any sound that does not contain a vowel. Consonants include the letters 'b', 'c', 'd', 'f', 'g', 'h', 'j', 'k', 'l', 'm', 'n', 'p', 'q', 'r', 's