The core of the English language descends from the Old English language, brought from the 500s with the Anglo, Saxon, and Jutish settlers to what would be called England. The bulk of the language in spoken and written texts is from this source. As a statistical rule, around 70 percent of words in any text are Old English. Moreover, the grammar is largely Old English. A significant portion of the English vocabulary comes from Romance and Latinate sources. Estimates of native words (derived from Old English) range from 20%–33%, with the rest made up of outside borrowings. A portion of these borrowings come directly from Latin, or through one of the Romance languages, particularly Anglo-Norman and French, but some also from Italian, Portuguese, and Spanish; or from other languages (such as Gothic, Frankish or Greek) into Latin and then into English. The influence of Latin in English, therefore, is primarily lexical in nature, being confined mainly to words derived from Latin roots. While some new words enter English as slang, most do not. Some words are adopted from other languages; some are mixtures of existing words (portmanteau words), and some are new creations made of roots from dead languages. Word origins A computerized survey of about 80,000 words in the old Shorter Oxford Dictionary (3rd ed.) was published in Ordered Profusion by Thomas Finkenstaedt and Dieter Wolff (1973) that estimated the origin of English words as follows: French: 28.30% Latin, including modern scientific and technical Latin: 28.24% Germanic languages – inherited from Old English, from Proto-Germanic, or a more recent borrowing from a Germanic language such as Old Norse; does not include Germanic words borrowed from a Romance language, i.e., coming from the Germanic element in French, Latin or other Romance languages: 25% Greek: 5.32% No etymology given: 4.04% Derived from proper names: 3.28% All other languages: less than 1% A survey by Joseph M. Williams in Origins of the English Language of 10,000 words taken from several thousand business letters gave this set of statistics: French (langue d'oïl): 41% "Native" English: 33% Latin: 15% Old Norse: 5% Dutch: 1% Other: 5% Languages influencing the English language Here is a list of the most common foreign language influences in English, where other languages have influenced or contributed words to English. Celtic Celtic words are almost absent, except for dialectal words, such as the Yan Tan Tethera system of counting sheep.