Like all Semitic languages, the Hebrew language exhibits a pattern of stems consisting typically of "triliteral", or 3-consonant consonantal roots, from which nouns, adjectives, and verbs are formed in various ways: e.g. by inserting vowels, doubling consonants, lengthening vowels and/or adding prefixes, suffixes or infixes. 4-consonant roots also exist and became more frequent in the modern language due to a process of coining verbs from nouns that are themselves constructed from 3-consonant verbs. Some triliteral roots lose one of their consonants in most forms and are called "Nehim" (Resting).