Here is a list of basic stock market terms
Reverse Split or R/S : This is when company reduces the total number of its outstanding shares. So if there were 100,000 shares outstanding and they reduced it to 1,000 that would be a 100-1 reverse split. The stock price then would go by 100 times. So the value you hold remains the same. Penny Stocks companies will apply reverse splits to the outstanding shares but not to the Authorized shares. That is a huge red flag.
Common Stock: This are the shares that are commonly owned and/or traded by the