Oak vs Kharkiv

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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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Kharkiv (Ukrainian: Ха́рків, romanized: Chárkiv, pronounced [ˈxɑrkiu̯]), also known as Kharkov (Russian: Ха́рьков [ˈxarʲkəf]) is the second largest city in Ukraine. In the northeast of the country, it is the largest city of the Slobozhanshchyna historical region. Kharkiv is the administrative centre of Kharkiv Oblast and of the surrounding Kharkiv Raion, though administratively it is incorporated as a city of oblast significance and does not belong to the raion. The latest population estimate is 1,443,207 (2020 est.).. The city was founded in 1654 and after a humble beginning as a small fortress grew to be a major centre of Ukrainian industry, trade and culture in the Russian Empire. Kharkiv was the first capital of the Ukrainian Soviet Socialist Republic, from December 1919 to January 1934, after which the capital relocated to Kyiv.

Presently, Kharkiv is a major cultural, scientific, educational, transport and industrial centre of Ukraine, with numerous museums, theatres and libraries, including the Annunciation and Dormition Cathedrals, the Derzhprom building in Freedom Square, and the National University of Kharkiv. Kharkiv was a host city for UEFA Euro 2012. Industry plays a large role in Kharkiv's economy. Kharkiv's industry specializes primarily in machinery and in electronics. There are hundreds of industrial companies in the city, including the Morozov Design Bureau and the Malyshev Tank Factory (leaders in world tank production from the 1930s to the 1980s); Khartron (aerospace and nuclear power plants automation electronics); the Turboatom (turbines for hydro-, thermal- and nuclear-power plants), and Antonov (the multipurpose aircraft manufacturing plant).

Source: Wikipedia