Avocado as a diminutive in Australian English, a clipped form, "avo", has since become a common colloquialism in South Africa and the United Kingdom. It is known as "butter fruit" in parts of India and goes by the name "bơ" [ɓɘː] in Vietnamese, which is the same word that is used for butter. In eastern China, it is known as "è lí" ("alligator pear") or "niú yóu guǒ" ("butter fruit"). In Taiwan, it is known as "luò lí" or "cheese pear". The subtropical species needs a climate without frost and with little wind. High winds reduce the humidity, dehydrate the flowers,
Williams pear the variety into the United States. It was not realised that Bartlett and Williams Pears were the same until 1828, when new trees arrived from Europe. By that time the Bartlett variety had become vastly popular in the United States, and they are still generally known as Bartlett pears in the US and Canada, although there are about 150 other synonyms worldwide. The pear exhibits a pyriform "pear shape," with a rounded bell on the bottom half of the fruit, and then a definite shoulder with a smaller neck or stem end. Williams are aromatic pears, and have what many