Customers share a physical server, its processor(s), storage/disk space, CPU, memory, and connection to the data centre network. Shared hosting is attractive as a low-cost solution for relatively simple web sites.
The word shared can refer to either a directory, media device, or printer, and means that the item is made available for users from other systems on your network to use over the network. For example, if Jan has marked a directory shared, and John has a system on the same network, he can open that directory on his own system. Similarly, if she has marked her CD-ROM drive shared, he could use her CD-ROM drive from his own system.