A caliphate (Arabic: Ø®ÙÙØ§ÙØ© khilÄfa) is an area containing an Islamic steward known as a caliph (Arabic: Ø®ÙÙÙÙØ© khalÄ«fah pronunciation (info â¢ help))âa person considered a religious successor to the Islamic prophet, Muhammad (Muhammad ibn Ê¿AbdullÄh), and a leader of the entire Muslim community.
A consonant is a speech sound that's not a vowel. The sound of a consonant is produced by a partial or complete obstruction of the air stream by a constriction of the speech organs. In writing, a consonant is any letter of the alphabet except a, e, i, o, u, and sometimes y.
A vowel is a type of sound for which there is no closure of the throat or mouth at any point where vocalization occurs. This can be contrasted with consonants, which are sounds for which there are one or more points where air is stopped. In nearly all languages, words must contain at least one vowel.