Alphabets are split into vowels and consonants.

Vowels

Alphabets like A, E, I, O, U are called as vowels.

Consonants

Alphabets other than vowels are called as consonants.

Consonant letters in the English alphabet are B, C, D, F, G, H, J, K, L, M, N, P, Q, R, S, T, V, W, X, Y, Z.