Vowels Sounds in English Language

English has 26 alphabets out of which 5 vowels and 21 are consonants. The vowels are a,e,i,o,u and rest of the alphabets denote consonant sounds. One important fact about vowels is this that consonants need at least single vowel to make words though there are few words without vowels but they usually end with vowel sound.
Definition of vowel: A vowel is a sound that's not a consonant in English language that is characterized by open vocal tract withou building air pressure at any point. The word vowel came from the Latin word "vocalis" that means "speaking" because no speech is possible without vowels and of course no word could be formed without using vowel. In English, the word vowel is commonly used to mean both vowel sounds and the written symbols that represent them i.e. a, e, i, o, u.
English to Urdu Dictionary

Vowel Definition in Urdu