Shared hosting disadvantage. Shared hosting is referred to as splitting of  server space to many customers using same server resources like processor, ram, etc. Web hosting company do this so that server cost is reduced and large number of website can be made hosted on the same server.

Despite numerous advantages of shared hosting, there are disadvantages too. As you are sharing same resources like others thousand of customer, response time may be less than optimal. For example, your website is on the same web server like other high traffic volume websites, and so your website may notice a performance lag. It will take more time to load.

Every hosting company has its own terms. And allow to use only limited resource, Usage beyond that limit will state as abuse and their account will be banned at once. Disk space and bandwidth are other two factors. They will say you will have unlimited dick space and bandwidth but the truth will be something else. You can only find out by reading their terms.

Quick Tip: Shared hosting is best if you start a new website once the traffic started to spike you should immediately switch to the VPS or dedicated server.