Did you ever focus on the term -Liquidity- that is generally used to understand the flow of forex market?
For the sake of simplicity let us say Liquidity defines the volume of transactions that happens per day, in the sense of how many transactions and how much of amount is being traded. Liquidity defines the ease with which you would be able to carry out orders in the market, without even manipulating the prices. s.
If we take a rough idea then number of traders must be twice of the number of transactions in ideal case, if one buyer and one seller are involved in one transaction. But actually single trader trades over multiple currencies which results more than one transaction. In short, liquidity defines the volatility of the price movements. The more any currency pair is liquid, the less it will move since large volume of trades are executing on that pair. The less liquidity means harder to sell or buy that pair.
Moreover, the more liquid market means it has more number of traders having many trades and transactions. has excessive liquidity as million of traders, bankers and brokers are involved in it. So that a forex trading can buy or sell multiple trades on some clicks, further growth are increasing day about day expanding the retail traders as well.
Let us consider real estate market for a while. This is the market which is extremely illiquid as you know it requires a lot of investments and starting capital to form such physical building while in forex market you can start at a very low amount. As a result you will find a bigger range of price offered for illiquid assets while a highly liquid asset will have a very specific price.
Now the question must be in your mind that on which factors liquidity actually depends. liquidity varies everyday day as global financial centers open and close as per their respective zones. Sometimes liquidity gets affected due to market holidays in various countries and seasonal festivals like x-mas day.
No one can predict the uncertainty of price movements so there is a great risk in more volatile pairs of thin liquidity where maintaining a position in the market is quite difficult and hence difficult to take action.
So it is recommended to invest after analyzing the market condition where a catalyst could be news events and assumptions of forex experts. A complete information can help you lot while trading to learn the market tricks.