Oak vs Isfahan

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An oak is a tree or shrub in the genus Quercus (; Latin "oak tree") of the beech family, Fagaceae. There are approximately 500 extant species of oaks. The common name "oak" also appears in the names of species in related genera, notably Lithocarpus (stone oaks), as well as in those of unrelated species such as Grevillea robusta (silky oaks) and the Casuarinaceae (she-oaks). The genus Quercus is native to the Northern Hemisphere, and includes deciduous and evergreen species extending from cool temperate to tropical latitudes in the Americas, Asia, Europe, and North Africa. North America contains the largest number of oak species, with approximately 90 occurring in the United States, while Mexico has 160 species of which 109 are endemic. The second greatest center of oak diversity is China, which contains approximately 100 species.

Oaks have spirally arranged leaves, with lobate margins in many species; some have serrated leaves or entire leaves with smooth margins. Many deciduous species are marcescent, not dropping dead leaves until spring. In spring, a single oak tree produces both male flowers (in the form of catkins) and small female flowers, meaning that the trees are monoecious. The fruit is a nut called an acorn or oak nut borne in a cup-like structure known as a cupule; each acorn contains one seed (rarely two or three) and takes 6–18 months to mature, depending on their species. The acorns and leaves contain tannic acid, which helps to guard from fungi and insects. The live oaks are distinguished for being evergreen, but are not actually a distinct group and instead are dispersed across the genus.

Source: Wikipedia

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Isfahan (Persian: اصفهان‎, romanized: Esfahān, [esfæˈhɒːn] (listen)), historically also rendered in English as Ispahan, Spahan, Sepahan, Esfahan or Hispahan, is a major city in Iran, Greater Isfahan Region. It is located 406 kilometres (252 miles) south of Tehran and is the capital of Isfahan Province. Isfahan has a population of approximately 2.0 million, making it the third-largest city in Iran after Tehran and Mashhad, but was once one of the largest cities in the world. Isfahan is an important city as it is located at the intersection of the two principal north–south and east–west routes that traverse Iran. Isfahan flourished from 1050 to 1722, particularly in the 16th and 17th centuries under the Safavid dynasty when it became the capital of Persia for the second time in its history under Shah Abbas the Great.

Even today the city retains much of its past glory. It is famous for its Perso–Islamic architecture, grand boulevards, covered bridges, palaces, tiled mosques and minarets. Isfahan also has many historical buildings, monuments, paintings, and artifacts. The fame of Isfahan led to the Persian pun and proverb "Esfahān nesf-e- jahān ast": Isfahan is half (of) the world.The Naghsh-e Jahan Square in Isfahan is one of the largest city squares in the world. UNESCO has designated it a World Heritage Site.

Source: Wikipedia