The Hebrew alphabet consists entirely of consonants, though some can function as vowels. Vowels are indicated with a system of dots and dashes next to the letters, but these are usually omitted except in Bibles and children's books. It is common for words, especially foreign words, to be spelled in more than one way; the Abu'l`afia Synagogue has five different spellings of its name on its signs.
The accent is usually on the last syllable; most of the exceptions are segolates (words in which segol, the e-sound, was inserted after the accent), such as elef "thousand". Some words have a diphthong "ua" or "ia" which is one syllable but sounds like two, like English "oil". This is called pattach gnubah "stolen a-sound" and occurs in shavua "week", which is accented on the "u".
Five letters (מנצפכ) have a different form at the end of a word (םןץףך, respectively). These are named by adding סופית (so-FEET) "final" to the name of the letter, e.g. נון סופית.
glottal stop or silent ('sometimes used as the letter a when rendering English in Hebrew')