When prices in the market are higher than their real value, it is said that the market has a “bubble”. Usually after a while, the prices correct and decrease.
A buy wall is the result of a single huge buy order or the combination of multiple large buy orders that are put at the same price in the buy reservation part of a particular market. Buy walls can be created by a wealthy individual, group of traders or institutions.
A Candle or a Candlestick is a form of price chart, showing the highest price, the lowest price and the opening and closing prices of a cryptocurrency during a certain period (normally a day).