call and put option

call option and put option is just something different when the stock price goes up the call option premium goes up and when the stock price goes down the put option premium goes up now the market is falling from last 5 days the put option premium of many scrips have doubled literally and call option premium has come down more than 50%.today only the nifty put and call options are seeing 30 to 100% premium difference.my friend had bought a put option of 5200 on monday ,there is an increase of nearly 120% in four days .keep watching the market i am planning to buy call option of 5000 strike price