Not the same. oak. Alias: Oak tree, oak tree, is the collective name for tree species of the genus Quercus in the family Fagaceae. As shown in the picture: /submsg/960519/ Deciduous or evergreen trees, a few are shrubs. The leaf margins are serrated and rarely entire. The male flowers are in drooping catkins, and the female flowers are solitary in the involucre. The nut is solitary, the inner wall of the pericarp is hairless, and the rudimentary ovule is located outside the base of the seed. It is distributed in Asia, Europe, Africa, and America. It is rich in resources, with about 300 species. There are more than 60 species of oak trees in China. Most of them are in Heilongjiang, Liaoning, Jilin, Inner Mongolia, Shandong, Henan, Guizhou, Guangxi, Anhui, Shaanxi, Sichuan and other provinces. Vertically distributed, it can grow from flat land to mountains with an altitude of 3,000 meters. In the high mountains of central Sichuan, it can grow at an altitude of 4,600 meters. Its leaves are the main feed for tussah silkworms. Wood is strong and corrosion-resistant, and bark, leaves, shells, and extracts are necessary materials for tanning, printing, dyeing, and fishing. The thicker cortex of cork can be used as industrial cork material. The rubber tree is also called Hevea brasiliensis and Hevea hevea. Belongs to the genus Rubber Tree of the Euphorbiaceae family. As shown in the picture: /i?ct=503316480&z=0&tn=baiduimagedetail&word=%CF%F0%BD%BA%CA%F7&in=48&cl=2&cm=1&sc=0&lm=-1&pn=47&rn=1 Evergreen trees; the stem bark is rich in latex. Three compound leaves, alternate, with long petiole, usually with 3 glands at the top, leaflets elliptical to obovate, leathery, hairless, with obvious lateral veins and network veins, small green flowers blooming in spring, unisexual, monoecious. An axillary panicle is composed of multiple cymes. The central flower of each cyme is a female flower, and the rest are male flowers. Capsule is large, spherical, split into 3 petals when mature; seeds are large. It is native to the Amazon River Basin in South America, mainly produced in Brazil, followed by Peru, Colombia, Ecuador, Guyana, Venezuela and Bolivia. It has been introduced and cultivated in tropical areas in more than 30 countries, and Southeast Asian countries have the most extensive cultivation and the largest rubber production. Five countries, including Malaysia, Indonesia, Thailand, Sri Lanka and India, account for 90% of the world's rubber planting area and rubber production.